E Series LTE Standard Module

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Product Information

Specifications

• Product Series: EC2x&EG2x&EG9x&EM05 Series LTE
  Standard Module
• Version: 1.3
• Date: 2024-09-26
• Status: Released

Product Usage Instructions

1. Contact Information

If you require assistance or have any inquiries, you can contact
Quectel at the following:

Address: Building 5, Shanghai Business Park Phase III (Area B),
No.1016 Tianlin Road, Minhang District, Shanghai 200233, China

Tel: +86 21 5108 6236

Email: info@quectel.com

2. Technical Support

For technical support or to report documentation errors, visit
the technical support page at http://www.quectel.com/support/technical.htm
or email support@quectel.com.

3. Legal Information

– Use and Disclosure Restrictions: Keep documents and
information confidential unless specific permission is granted.

– Copyright: Respect copyright laws and use materials only as
provided herein.

– Privacy Policy: Data uploaded to servers will be processed as
per relevant laws and regulations.

Frequently Asked Questions (FAQ)

Q: What should I do if I encounter difficulties during the
upgrade process?

A: If you face any issues during the upgrade process, please
refer to the troubleshooting section in the Upgrade Guide document.
If the problem persists, contact our technical support for
assistance.

Q: Can I use third-party materials with the LTE Standard Module
Series?

A: Third-party materials should be used according to the
restrictions and obligations applicable to them. Refer to the legal
notices for more information.

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EC2x&EG2x&EG9x&EM05 Series DFOTA Upgrade Guide
LTE Standard Module Series Version: 1.3 Date: 2024-09-26 Status: Released

LTE Standard Module Series
At Quectel, our aim is to provide timely and comprehensive services to our customers. If you require any assistance, please contact our headquarters:
Quectel Wireless Solutions Co., Ltd. Building 5, Shanghai Business Park Phase III (Area B), No.1016 Tianlin Road, Minhang District, Shanghai 200233, China Tel: +86 21 5108 6236 Email: info@quectel.com
Or our local offices. For more information, please visit: http://www.quectel.com/support/sales.htm.
For technical support, or to report documentation errors, please visit: http://www.quectel.com/support/technical.htm. Or email us at: support@quectel.com.
Legal Notices
We offer information as a service to you. The provided information is based on your requirements and we make every effort to ensure its quality. You agree that you are responsible for using independent analysis and evaluation in designing intended products, and we provide reference designs for illustrative purposes only. Before using any hardware, software or service guided by this document, please read this notice carefully. Even though we employ commercially reasonable efforts to provide the best possible experience, you hereby acknowledge and agree that this document and related services hereunder are provided to you on an “as available” basis. We may revise or restate this document from time to time at our sole discretion without any prior notice to you.
Use and Disclosure Restrictions
License Agreements
Documents and information provided by us shall be kept confidential, unless specific permission is granted. They shall not be accessed or used for any purpose except as expressly provided herein.
Copyright
Our and third-party products hereunder may contain copyrighted material. Such copyrighted material shall not be copied, reproduced, distributed, merged, published, translated, or modified without prior written consent. We and the third party have exclusive rights over copyrighted material. No license shall be granted or conveyed under any patents, copyrights, trademarks, or service mark rights. To avoid ambiguities, purchasing in any form cannot be deemed as granting a license other than the normal non-exclusive, royalty-free license to use the material. We reserve the right to take legal action for noncompliance with abovementioned requirements, unauthorized use, or other illegal or malicious use of the material.

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Trademarks
Except as otherwise set forth herein, nothing in this document shall be construed as conferring any rights to use any trademark, trade name or name, abbreviation, or counterfeit product thereof owned by Quectel or any third party in advertising, publicity, or other aspects.
Third-Party Rights
This document may refer to hardware, software and/or documentation owned by one or more third parties (“third-party materials”). Use of such third-party materials shall be governed by all restrictions and obligations applicable thereto.
We make no warranty or representation, either express or implied, regarding the third-party materials, including but not limited to any implied or statutory, warranties of merchantability or fitness for a particular purpose, quiet enjoyment, system integration, information accuracy, and non-infringement of any third-party intellectual property rights with regard to the licensed technology or use thereof. Nothing herein constitutes a representation or warranty by us to either develop, enhance, modify, distribute, market, sell, offer for sale, or otherwise maintain production of any our products or any other hardware, software, device, tool, information, or product. We moreover disclaim any and all warranties arising from the course of dealing or usage of trade.
Privacy Policy
To implement module functionality, certain device data are uploaded to Quectel’s or third-party’s servers, including carriers, chipset suppliers or customer-designated servers. Quectel, strictly abiding by the relevant laws and regulations, shall retain, use, disclose or otherwise process relevant data for the purpose of performing the service only or as permitted by applicable laws. Before data interaction with third parties, please be informed of their privacy and data security policy.
Disclaimer
a) We acknowledge no liability for any injury or damage arising from the reliance upon the information. b) We shall bear no liability resulting from any inaccuracies or omissions, or from the use of the
information contained herein. c) While we have made every effort to ensure that the functions and features under development are
free from errors, it is possible that they could contain errors, inaccuracies, and omissions. Unless otherwise provided by valid agreement, we make no warranties of any kind, either implied or express, and exclude all liability for any loss or damage suffered in connection with the use of features and functions under development, to the maximum extent permitted by law, regardless of whether such loss or damage may have been foreseeable. d) We are not responsible for the accessibility, safety, accuracy, availability, legality, or completeness of information, advertising, commercial offers, products, services, and materials on third-party websites and third-party resources.
Copyright © Quectel Wireless Solutions Co., Ltd. 2024. All rights reserved.

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About the Document

Revision History

Version 1.0 1.1 1.2
1.3

Date 2018-01-12 2021-05-31

Author
Ramos ZHANG/ Demi QU Ramos ZHANG/ Carlton XU

2023-05-16

Damon LI/ Ramos ZHANG/ Carlton XU

2024-09-26 Mount ZHONG

Description
First official release
Added the applicable modules: EG2x-G.
1. Updated the applicable modules: Added EG21-GL and EG25-GL. Updated EC20 R2.1 to EC20-CE.
2. Updated the note about DFOTA upgrade process (Chapter 4.2).
1. Updated the document name from “Application Note” to “Upgrade Guide”.
2. Added the chapter of DFOTA implementation and user responsibility (Chapter 1.1).
3. Optimized the DFOTA firmware upgrade flowchart to distinguish between the user side and the Quectel side (Figure 1).
4. Optimized the description of the DFOTA firmware upgrade steps and added relevant notes to distinguish between the user side and the Quectel side (Chapter 2).
5. Updated the declaration of AT command examples (Chapter 3.2).
6. Updated the description of AT+QFOTADL (Chapter 3.3).
7. Optimized the explanation of the <ftpURL> parameter and updated the URL address and related instructions in the command example (Chapter 3.3.1).
8. Optimized the explanation of the <httpURL> parameter and updated the URL address and

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related instructions in the command example

(Chapter 3.3.2).

9. Updated

the

description

of

AT+QFOTADL=<file_name>

and

the

explanation of <file_name> (Chapter 3.3.3).

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Contents
About the Document ………………………………………………………………………………………………………………….. 3 Contents ……………………………………………………………………………………………………………………………………. 5 Table Index………………………………………………………………………………………………………………………………… 6
1 Introduction ………………………………………………………………………………………………………………………… 7 1.1. DFOTA Implementation and User Responsibility………………………………………………………….. 7 1.2. Applicable Modules ………………………………………………………………………………………………….. 8
2 Firmware Upgrade via DFOTA……………………………………………………………………………………………… 9 2.1. Get Delta Firmware Package …………………………………………………………………………………… 10 2.2. Upload Delta Firmware Package to FTP/HTTP(S) Server …………………………………………… 10 2.3. Execute AT Command to Upgrade the Firmware ……………………………………………………….. 10
3 Description of DFOTA AT Commands………………………………………………………………………………… 11 3.1. AT Command Introduction……………………………………………………………………………………….. 11 3.1.1. Definitions……………………………………………………………………………………………………….. 11 3.1.2. AT Command Syntax ……………………………………………………………………………………….. 11 3.2. Declaration of AT Command Examples …………………………………………………………………….. 12 3.3. AT+QFOTADL Upgrade Firmware via DFOTA …………………………………………………………. 12 3.3.1. AT+QFOTADL=<ftpURL> Upgrade Firmware over FTP Server …………………………… 12 3.3.2. AT+QFOTADL=<httpURL> Upgrade Firmware over HTTP(S) Server ………………….. 14 3.3.3. AT+QFOTADL=<file_name> Upgrade Firmware over Local File System ……………… 15
4 Abnormalities and Important Notes……………………………………………………………………………………. 17 4.1. Abnormalities…………………………………………………………………………………………………………. 17 4.1.1. Wrong Delta Firmware Package ………………………………………………………………………… 17 4.1.2. Failure of Firmware Upgrade …………………………………………………………………………….. 17 4.2. Important Notes ……………………………………………………………………………………………………… 18
5 Summary of Error Codes …………………………………………………………………………………………………… 19
6 Appendix References ………………………………………………………………………………………………………… 20

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Table Index
Table 1: Applicable Modules…………………………………………………………………………………………………………. 8 Table 2: Types of AT Commands ………………………………………………………………………………………………….11 Table 3: Summary of Error Codes……………………………………………………………………………………………….. 19 Table 4: Related Document………………………………………………………………………………………………………… 20 Table 5: Terms and Abbreviations ……………………………………………………………………………………………….. 20

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1 Introduction
Quectel EC2x family, EG2x family, EG9x family and EM05 series modules support DFOTA (Delta Firmware Over-The-Air) function. With this function, you can upgrade the module firmware to a new version or revert the firmware to an old version. The delta firmware package only contains the difference between the original firmware version and the target firmware version, with the amount of data transmission greatly reduced and the transmission time greatly shortened.
1.1. DFOTA Implementation and User Responsibility
Quectel follows industry best practices with regard to firmware updates for its modules by enabling users to offer DFOTA updates. Please note that Quectel does not have the ability to unilaterally push updates to users’ devices. Quectel hands full control over the DFOTA process to users. In the process, Quectel solely provides the updated firmware but cannot initiate DFOTA updates on users’ devices. Users can determine when to push the update to the Quectel modules using the DFOTA mechanism by configuring corresponding parameters for the update that the users host on their own infrastructures.

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1.2. Applicable Modules

Table 1: Applicable Modules

Module Family EC2x
EG2x EG9x –

Module EC20-CE EC21 Series EC25 Series EG21-G EG25-G EG21-GL EG25-GL EG91 Series EG95 Series EM05 Series

LTE Standard Module Series

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2 Firmware Upgrade via DFOTA

The following chart illustrates the procedures of firmware upgrade via DFOTA.

User Side

User s host

User-owned FTP/HTTP(S) 2. Upload the delta firmware server package from the host to user-owned FTP/HTTP(S) server

1. Get the delta firmware package from Quectel Technical Support.

3. Send AT+QFOTADL on the host to trigger automatic firmware upgrade on the module.

LT E/W CD MA /GSM/GPRS

Quectel delta firmware package
Quectel Side

Quectel module

4. Quectel module automatically downloads the firmware package from the user-owned FTP/ HTTP(S) server via LTE/ WCDMA/GSM/GPRS network.

5. Automatically upgrade module firmware.

Figure 1: Firmware Upgrade via DFOTA

As shown in the above figure, the following steps need to be performed to upgrade the firmware when the delta firmware package is stored on an FTP/HTTP(S) server:
Step 1: Get the delta firmware package from Quectel Technical Support (see Chapter 2.1 for details). Step 2: Upload the delta firmware package from the host to your FTP/HTTP(S) server (see Chapter 2.2
for details). Step 3: Execute AT+QFOTADL on the host to trigger automatic firmware upgrade on the module (see
Chapter 2.3 for details. Step 4: The module automatically downloads the firmware package from your FTP/HTTP(S) server via
LTE/WCDMA/GSM/GPRS network. Step 5: The module internally runs the updating program to automatically upgrade the module firmware.

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NOTE You are responsible for providing and managing the FTP/HTTP(S) server for the firmware upgrade. Quectel does not supply the server or assist with its setup.
2.1. Get Delta Firmware Package
Before firmware upgrading, check the original firmware version name with ATI and confirm the target firmware version, and then send the two firmware versions to Quectel Technical Support to obtain the corresponding delta firmware package.
2.2. Upload Delta Firmware Package to FTP/HTTP(S) Server
Step 1: Please set up an FTP/HTTP(S) server before using the DFOTA function. (Quectel does not provide such servers.)
Step 2: After completing the server setup, upload the delta firmware package to your server, and save the storage path.
2.3. Execute AT Command to Upgrade the Firmware
After uploading the delta firmware package to the FTP/HTTP(S) server, execute AT+QFOTADL on the host to initiate the automatic over-the-air download and upgrade of module delta firmware package. For more details, see Chapter 3.
NOTE The module supports firmware upgrades via both the FTP/HTTP(s) server and the local file system. For more information on the firmware upgrades via the local file system, see Chapter 3.3.3.

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3 Description of DFOTA AT Commands

3.1. AT Command Introduction

3.1.1. Definitions

<CR>

Carriage return character.

<LF>

Line feed character.

<…>

Parameter name. Angle brackets do not appear on command line.

[…]

Optional parameter of a command or an optional part of TA information response.

Square brackets do not appear on the command line. When an optional parameter is

not given in a command, the new value equals its previous value or the default settings,

unless otherwise specified.

Underline Default setting of a parameter.

3.1.2. AT Command Syntax
All command lines must start with AT or at and end with <CR>. Information responses and result codes always start and end with a carriage return character and a line feed character: <CR><LF><response><CR><LF>. In tables presenting commands and responses throughout this document, only the commands and responses are presented, and <CR> and <LF> are deliberately omitted.

Table 2: Types of AT Commands

Command Type

Syntax

Description

Test Command

AT+<cmd>=?

Read Command

AT+<cmd>?

Test the existence of the corresponding command and return information about the type, value, or range of its parameter.
Check the current parameter value of the corresponding command.

Write Command

AT+<cmd>=<p1>[,<p2>[,<p3>[…]]] Set user-definable parameter value.

Execution Command AT+<cmd>

Return a specific information parameter or perform a specific action.

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3.2. Declaration of AT Command Examples
The AT command examples in this document are provided to help you learn about the use of the AT commands introduced herein. The examples, however, should not be taken as Quectel’s recommendations or suggestions about how to design a program flow or what status to set the module into. Sometimes multiple examples may be provided for one AT command. However, this does not mean that there is a correlation among these examples, or that they should be executed in a given sequence. The URLs, domain names, IP addresses, usernames/accounts, and passwords (if any) in the AT command examples are provided for illustrative and explanatory purposes only, and they should be modified to reflect your actual usage and specific needs.

3.3. AT+QFOTADL Upgrade Firmware via DFOTA

This command enables automatic firmware upgrade for module via DFOTA. After executing the corresponding command, the module will automatically download or load the delta package from FTP/HTTP(S) server or local file system. After the package is successfully downloaded or loaded, the module will automatically check whether the package version is correct. If the delta package is correct, the module will reboot automatically and then enter into recovery mode to upgrade the firmware. After the firmware is upgraded successfully, the module will reboot and work normally.

AT+QFOTADL Upgrade Firmware via DFOTA

Test Command AT+QFOTADL=?

Response OK

Maximum Response Time

–

Characteristics

–

3.3.1. AT+QFOTADL=<ftpURL> Upgrade Firmware over FTP Server

If the delta package is stored on an FTP server, execute AT+QFOTADL=<ftpURL> to initiate automatic firmware upgrade via DFOTA. Then the module will download the delta package from the FTP server over the air and upgrade the firmware automatically.

AT+QFOTADL=<ftpURL> Upgrade Firmware over FTP Server

Write Command AT+QFOTADL=<ftpURL>

Response OK

+QIND: “FOTA”,”FTPSTART” +QIND: “FOTA”,”FTPEND”,<ftp_err>

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+QIND: “FOTA”,”START” +QIND: “FOTA”,”UPDATING”,<percent> +QIND: “FOTA”,”UPDATING”,<percent> … +QIND: “FOTA”,”END”,<err>
If there is any error: ERROR 300 ms
This command take effect immediately.

Parameter
<ftpURL>
<ftp_err> <percent> <err>

String type. The URL that the delta package stored on the FTP server. The

maximum length is 255 bytes. It should be started with “FTP://”. For example:

“FTP://<user_name>:<password>@<serverURL>:<port>/<file_path>”.

<username> String type. The username for authentication. The maximum

length is 50 bytes.

<password> String type. The password for authentication. The maximum

length is 50 bytes.

<serverURL> String type. The IP address or domain name of the FTP server

owned and operated by you. The maximum length is 50 bytes.

<port>

Integer type. The port of the FTP server.

Range: 1­65535. Default value: 21.

<file_path>

String type. The file path on FTP server.

The maximum length is 50 bytes.

Integer type. The FTP error code. 0 means upgraded successfully. See Chapter 5

for details.

Integer type. The upgrade progress in percentage.

0 means upgraded successfully. Any other value means an error. See Chapter 5

for details.

Example
//You can perform the firmware upgrade after storing the delta package on your FTP server.
//”ftp://test:test@192.0.2.2:21/Jun/update-v12-to-v13.zip” is used as an example URL below. (The URL is provided for illustrative purpose only. Please replace it with a valid URL that corresponds to your FTP server and firmware package.)
//Execute the following command to initiate automatic firmware upgrade via DFOTA, and then the module downloads the delta firmware package and upgrades firmware automatically.
AT+QFOTADL=”ftp://test:test@192.0.2.2:21/Jun/update-v12-to-v13.zip”

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OK

+QIND: “FOTA”,”FTPSTART” +QIND: “FOTA”,”FTPEND”,0

//Start to download the delta firmware package from FTP server. //Finish downloading the delta firmware package.

//The module will reboot automatically and the USB port will be re-initialized. If the current port is USB port, the host should close and reopen it.

+QIND: “FOTA”,”START” +QIND: “FOTA”,”UPDATING”,1 +QIND: “FOTA”,”UPDATING”,2 … +QIND: “FOTA”,”UPDATING”,100 +QIND: “FOTA”,”END”,0

//Start to upgrade the firmware. //Finish upgrading the firmware.

3.3.2. AT+QFOTADL=<httpURL> Upgrade Firmware over HTTP(S) Server

If the delta package is stored on an HTTP(S) server, execute AT+QFOTADL=<httpURL> to initiate automatic firmware upgrade via DFOTA. Then the module will download the delta package from the HTTP(S) server over the air and upgrade the firmware automatically.

AT+QFOTADL=<httpURL> Upgrade Firmware over HTTP(S) Server

Write Command AT+QFOTADL=<httpURL>

Response OK

+QIND: “FOTA”,”HTTPSTART” +QIND: “FOTA”,”HTTPEND”,<http_err> +QIND: “FOTA”,”START” +QIND: “FOTA”,”UPDATING”,<percent> +QIND: “FOTA”,”UPDATING”,<percent> … +QIND: “FOTA”,”END”,<err>

Maximum Response Time Characteristics

If there is any error: ERROR 300 ms
This command take effect immediately.

Parameter
<httpURL>

String type. The URL that the firmware package stored on the HTTP(S) server. The maximum length is 255 bytes. It should be started with “http://” or “https://”.

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<http_err>
<percent> <err>

For example: “http://<http_server_URL>:<http_port>/<http_file_path>”.

<http_server_URL> String type. The IP address or domain name of the

HTTP(S) server owned and operated by you.

<http_port>

Integer type. The port of the HTTP(S) server.

Range: 1­65535. Default value: 80.

<http_file_path>

String type. The file path in HTTP(S) server.

Integer type. The HTTP(S) error code. 0 means upgraded successfully. See

Chapter 5 for more details.

Integer type. The upgrade progress in percentage.

0 means upgraded successfully. Any other value means an error. See Chapter 5

for more details.

Example
//You can perform the firmware upgrade after storing the delta firmware package on your HTTP(S) server.
//”http://www.example.com:100/update.zip” is used as an example URL below. (The URL is provided for illustrative purpose only. Please replace it with a valid URL that corresponds to your HTTP(S) server and firmware package.)
//Execute the following command to initiate automatic firmware upgrade via DFOTA, and then the module downloads the delta package and upgrades the firmware automatically.
AT+QFOTADL=”http://www.example.com:100/update.zip” OK

+QIND: “FOTA”,”HTTPSTART” +QIND: “FOTA”,”HTTPEND”,0

//Start to download the delta firmware package from the HTTP(S) server.
//Finish downloading the delta firmware package.

//The module will reboot automatically and the USB port will be re-initialized. If the current port is USB port, the host should close and reopen it.

+QIND: “FOTA”,”START” +QIND: “FOTA”,”UPDATING”,1 +QIND: “FOTA”,”UPDATING”,2 … +QIND: “FOTA”,”UPDATING”,100 +QIND: “FOTA”,”END”,0

//Start to upgrade the firmware. //Finish upgrading the firmware.

3.3.3. AT+QFOTADL=<file_name> Upgrade Firmware over Local File System
If the delta package has already been stored in the module’s file system, AT+QFOTADL=<file_name> should be executed to initiate automatic firmware upgrade via DFOTA. Then the module will load the delta firmware package from the local file system and upgrade the firmware automatically.

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AT+QFOTADL=<file_name> Upgrade Firmware over Local File System

Write Command AT+QFOTADL=<file_name>

Response OK

+QIND: “FOTA”,”START” +QIND: “FOTA”,”UPDATING”,<percent> +QIND: “FOTA”,”UPDATING”,<percent> … +QIND: “FOTA”,”END”,<err>

Maximum Response Time Characteristics

If there is any error: ERROR –
–

Parameter
<file_name>
<percent> <err>

String type. The path of the delta firmware package on the local file system. The maximum length is 90 bytes. It should be started with “/data/ufs/” or “/usrdata/ufs/” in UFS. Integer type. The upgrade progress in percentage. 0 means upgraded successfully. Any other value means an error. See Chapter 5 for more details.

Example
//Upgrade firmware when delta firmware package is stored on local file system.
AT+QFOTADL=”/data/ufs/update-v12-to-v13.zip” OK

+QIND: “FOTA”,”START” +QIND: “FOTA”,”UPDATING”,1 +QIND: “FOTA”,”UPDATING”,2 … +QIND: “FOTA”,”UPDATING”,100 +QIND: “FOTA”,”END”,0

//Start to upgrade the firmware. //Finish upgrading the firmware.

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4 Abnormalities and Important Notes
4.1. Abnormalities
4.1.1. Wrong Delta Firmware Package
Execute AT+QFOTADL and the module will automatically download the package. When the package is downloaded successfully, the module will reboot automatically and then enter into recovery mode. Then the module will check the upgrade package first. If there is something wrong with the package, the URC (+QIND: “FOTA”,”END”,<err>) of an error code (504 or 510) will be reported. Then the module will reboot automatically, and enter into recovery mode and re-check the package five times at most. If the package is still wrong after five retries, the module will reboot and work normally. In such case, please confirm whether the delta package is correct; if not, re-upload the correct package to your FTP/HTTP(S) server.
4.1.2. Failure of Firmware Upgrade
If the delta package is correct, the module will start to upgrade firmware. If it fails to upgrade the firmware, the URC (+QIND: “FOTA”,”END”,<err>) of an error code (502, 511, 520-530 or 540-546) will be reported. Then the module will reboot automatically, and enter into recovery mode and retry to upgrade five times at most. If upgrade is still unsuccessful after five retries, the module will stop firmware upgrade and restore to the original version.
NOTE During the upgrading process, once the delta package is downloaded, the module will check and upgrade automatically. If the check or firmware upgrade fails, the delta package checksum and firmware upgrade can be retried up to 5 times.
As mentioned in Chapter 1, it is a completely automatic process after executing AT+QFOTADL. Therefore, any +QIND: “FOTA”,”END”,<err> URCs sent from the module to the host can be ignored.

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4.2. Important Notes
The following lists some important notes for upgrading: 1. The URC of +QIND: “FOTA”,”START” indicates the firmware upgrade process really starts. If the
host receives this URC after executing AT+QFOTADL, please do not power off the module until the firmware is upgraded successfully and +QIND: “FOTA”,”END”,0 is received. Then the module will automatically reboot and work normally. 2. During upgrading process, if the host does not receive any other URCs in four minutes after the last URC is returned, the module can be rebooted. 3. Meanwhile, it is recommended to set a flag on the host to mark the task of the firmware upgrading, and clean it after successful upgrading.
NOTE
It is recommended not to power off the module during the DFOTA upgrade process.

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5 Summary of Error Codes
This chapter introduces the err code related to mobile equipment or network. The details about <ftp_err>, <http_err> and <err> are described as follows.

Table 3: Summary of Error Codes

<ftp_err> 0 601 <http_err> 0 701 <err> 0 502 504 510 511 520­530, 540­546

Description Successful FTP download operation FTP unknown error Description Successful HTTP(S) download operation HTTP(S) unknown error Description Successful DFOTA upgrade The upgrade process exits for some unpredictable errors Something wrong with the upgrade package file The patch does not match the source file in the module, need to check whether the delta firmware package is wrong The file system has no enough space for upgrading
Firmware upgrading failed

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6 Appendix References

Table 4: Related Document Document Name [1] Quectel_EC2x&EG9x&EG2x-G&EM05_Series_AT_Commands_Manual

Table 5: Terms and Abbreviations

Abbreviation DFOTA FTP GPRS HTTP HTTP(S) LTE UFS URC URL WCDMA

Description Delta Firmware Upgrade Over-The-Air File Transfer Protocol General Packet Radio Service Hypertext Transfer Protocol Hyper Text Transport Protocol Secure Long-Term Evolution User File System Unsolicited Result Code Uniform Resource Locator Wideband Code Division Multiple Access

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Documents / Resources

QUECTEL E Series LTE Standard Module [pdf] User Guide EC2x, EG2x, EG9x, EM05, E Series LTE Standard Module, E Series, LTE Standard Module, Standard Module, Module

References

• User Manual