Grandstream WP816/WP826/WP836 Firmware Release Notes
FIRMWARE VERSION 1.0.1.80
Product Name: WP816, WP826, WP836
Date: 7/18/2025
Firmware File Information:
Firmware file name: wp8x6fw.bin
MD5: 752f8558d240c72930e30ea7b82d329f
Enhancement
- Enhance Device WLAN stability
- Added Support to filter warning message [CUSTOM FILTER WARNING MESSAGE]
New Features Overview
CUSTOM FILTER WARNING MESSAGE
Web Configuration: The related options can be found under device web UI→ Phone Settings → General Settings—Warning Filter Settings:
Functionality: Configure custom settings for filter warnings messages. In the configuration file, the writing of the selected content is as follows: For example, if 'Account Registration Failed' and 'Firmware Download Failed' are checked, the value of this configuration item in the configuration file is sys.accts,sys.upgrade.download_fw (Comma Division).
Pvalues
| Pvalue | Description | Value Range | Default |
|---|---|---|---|
| 22640 | <New Pvalue> Custom Filter Warnings Message | String: User Default Password - sys.user.pwd.default Database Corruption - sys.db Multiple Login Attempts to Admin Failed - user.login Capturing Data Packets - sys.pcap CPE Connection Failed - sys.cpe Account Registration Failed - sys.accts Storage Space is Full - sys.user_space Low Battery - sys.battery.low Role Downgraded in account Sharing - sys.account_sharing Invalid Custom Client Certificate - sys.cert Wi-Fi Connects to Default SSID - sys.wifi.default Wi-Fi Signal Issue - sys.wifi.signal.low Wi-Fi Disconnected Abnormal - sys.wifi.disconnected Network Abnormal - sys.net Firmware Download Failed - sys.upgrade.download_fw Configuration Acquisition Failed - sys.upgrade.cfg No Firmware Server Configured - sys.upgrade.url_fw Firmware Version Detection Failed - sys.upgrade.check_fw Firmware Server Authenticatio Issue - sys.upgrade.auth_fw Config Server Authenticatio Issue- sys.upgrade.auth_cfg Upgrade Certificate Issue - sys.upgrade.cert Upgrade/Config Update Blocked - sys.upgrade.lock | NULL |
FIRMWARE VERSION 1.0.1.79
Product Name: WP816, WP826, WP836
Date: 7/2/2025
Firmware File Information:
Firmware file name: wp8x6fw.bin
MD5: 3a9fba7d09a64c3fada85c822d0d28f9
Enhancement
- Enhanced Device security to meet EU certification requirements
- Updated web UI strings
- Added Support of Danish language for LCD display
- Added Support of WPA3/192 Security mode in Wi-Fi settings
- Increased the contacts group max limit to 50 groups
- Added Support to configure Wi-Fi Roaming Mode [WI-FI ROAMING MODE]
- Added Support to configure Off-screen indicator pattern [OFF SCREEN INDICATOR PATTERN]
- Added Support to have LCD backlight always on under certain situations [LCD BACKLIGHT ALWAYS ON SCENES]
Bug Fix
- Fixed Device fails to randomly register to different SBCs
- Fixed Device fails to connect to OpenVPN under certain situation
New Features Overview
WI-FI ROAMING MODE
Web Configuration: The related options can be found under device web UI→ Network Settings → Wi-Fi Settings→Advanced Settings:
Functionality: Wi-Fi Roaming Mode: Configure the Wi-Fi roaming mode to adapt to different roaming environments. Enable Roaming Prompt: Configuration whether to start roaming prompts. After it is enabled, if the phone roams, it will display text prompts and play alert tones.
Pvalues
| Pvalue | Description | Value Range | Default |
|---|---|---|---|
| 82332 | <New Pvalue> Wi-Fi Roaming Mode | Number : 0 - Default Mode 1 - Boost Mode | 1 |
| 82334 | <New Pvalue> Enable Roaming Prompt | Number: 0 - No 1 - Yes | 0 |
OFF SCREEN INDICATOR PATTERN
Web Configuration: This option can be found under device web UI→ System Settings → Preferences → Display Settings:
Functionality: Users can customize the mode in which the MWI indicator light flashes when the screen goes off according to their needs, provided that the device is in normal condition. The default is for the green light to light up for 100ms, gradually darken for 10ms, then turn off for 100ms, light up for 100ms, gradually darken for 10ms, and then turn off for 5s. Repeat this mode in the future. Pattern Syntax: c=color,t=on1/off1/change1[-on2/off2/change2[-on3/off3/change3][...]] (The color values are red, green and yellow. On, off and change refer to the time of LED light, dark, and light-dark switching, in ms). Please note: After configuration, the standby time of the device will be greatly reduced.
Pvalues
| Pvalue | Description | Value Range | Default |
|---|---|---|---|
| 29601 | <New Pvalue> Off Screen Indicator Pattern | String | NULL |
LCD BACKLIGHT ALWAYS ON SCENES
Web Configuration: This option can be found under device web UI→ System Settings → Preferences → Display Settings:
Functionality: Configure which events occur, the LCD screen needs to be constantly on.
Pvalues
| Pvalue | Description | Value Range | Default |
|---|---|---|---|
| 22637 | <New Pvalue> LCD Backlight Always On Scenes | String: networkError, accountFailed | networkError,accountFailed |
FIRMWARE VERSION 1.0.1.71
Product Name: WP816, WP826, WP836
Date: 5/1/2025
Firmware File Information:
Firmware file name: wp8x6fw.bin
MD5: 4b92907a83de595e48b6a0a625598a9f
Enhancement
- Added Support of timestamp directly in syslog message
- Added Calculator in LCD Tools menu
- Added Stopwatch in LCD Tools menu
Bug Fix
- Fixed Phonebook search from the LCD fails
- Fixed Blind transfer fails via Softkey
- Fixed Device registration issue with SIP TLS certificate
FIRMWARE VERSION 1.0.1.63
Product Name: WP816, WP826, WP836
Date: 03/11/2025
Firmware File Information:
Firmware file name: wp8x6fw.bin
MD5: b6de7204ca3b697f29ef0efc848267fd
Enhancement
- Added Support of OpenVPN failover
- Added Support of SSL Key Log File in One-click debug [OPENVPN FAILOVER]
New Features Overview
OPENVPN FAILOVER
Web Configuration: The related options can be found under device web UI→ Network Settings → OpenVPN® Settings:
Functionality: OpenVPN® Server Secondary Address: Configure OpenVPN® server secondary address. OpenVPN® Secondary Port: Configure OpenVPN® Secondary Port. Randomly Select Server: If enabled, a server will be randomly selected in the configuration to start OpenVPN requests. If closed, requests will be made in the order of server configuration.
Pvalues
| Pvalue | Description | Value Range | Default |
|---|---|---|---|
| 22597 | <New Pvalue> OpenVPN® Server Secondary Address | String | NULL |
| 22598 | <New Pvalue> OpenVPN® Server Secondary Port | Number | 1194 |
| 22599 | <New Pvalue> Randomly Select Server | Number : 0 - No 1 - Yes | 0 |
FIRMWARE VERSION 1.0.1.61
Product Name: WP816, WP826, WP836
Date: 02/24/2025
Firmware File Information:
Firmware file name: wp8x6fw.bin
MD5: 3136321cc8fad36b2aacc5bc4aae3e11
Enhancement
- Added Support of case sensitive search in Contacts
- Added Support to control the open door prompt confirmation
- Added Support to display time during active call
- Added Support to display battery percentage on the LCD
- Improved Device hard factory reset behavior
- Improved The stability of the device's Wi-Fi connectivity
- Updated web UI strings
- Added Support to display call forward destination number on the LCD home screen
- Added Support to remain LCD backlight at a very low brightness when charging
Bug Fix
- Fixed Local phonebook exact match search issue
- Fixed Device auto logout after GDMS remote access to the web UI
- Fixed Device does not ring for incoming call
Known Issues
- The device encounters low-frequency Wi-Fi connectivity issues, which is planned to be fixed as soon as possible.
New Features Overview
DISPLAY BATTERY PERCENTAGE
Web Configuration: This option can be found under device web UI→ System Settings → Preferences → Display Settings:
Functionality: Configure whether the battery level is displayed within the battery icon.
Pvalues
| Pvalue | Description | Value Range | Default |
|---|---|---|---|
| 22618 | <New Pvalue> Display Battery Percentage | Number : 0 - No 1 - Yes | 0 |
FIRMWARE VERSION 1.0.1.52
Product Name: WP816, WP826, WP836
Date: 12/31/2024
Firmware File Information:
Firmware file name: wp8x6fw.bin
MD5: 8f83ffa0ada94e8afb40fa89f8d3e8cc
Enhancement
- Added Support of case-sensitive search for phonebook [CASE SENSITIVE SEARCH]
- Added Support to use "open door" softkey to trigger the DTMF auto-input
- Added Support of Release DHCP On Reboot [RELEASE DHCP ON REBOOT]
Bug Fix
- Fixed Device outgoing call issue under certain scenarios
New Features Overview
CASE SENSITIVE SEARCH
Web Configuration: This option can be found under device web UI→ Application → Contacts → Phonebook Management:
Functionality: Configure whether contact search is case sensitive.
Pvalues
| Pvalue | Description | Value Range | Default |
|---|---|---|---|
| 22603 | <New Pvalue> Case Sensitive Search | Number : 0 - No 1 - Yes | 0 |
RELEASE DHCP ON REBOOT
Web Configuration: This option can be found under device web UI→ Network Settings → Advanced Settings:
Functionality: Configures whether phone will release DHCP lease on reboot.
Pvalues
| Pvalue | Description | Value Range | Default |
|---|---|---|---|
| 22380 | <New Pvalue> Release DHCP On Reboot | Number : 0 - No 1 - Yes | 0 |
FIRMWARE VERSION 1.0.1.44
Product Name: WP816, WP826, WP836
Date: 11/22/2024
Firmware File Information:
Firmware file name: wp8x6fw.bin
MD5: a029f7e626c1d6372e7535e71b5efdeb
Enhancement
- Added Support to dial numbers when a missed call notification is displayed on the LCD screen
- Updated the term to “block list” on the LCD menu
- Improved Device Security
- Added Support to change ringtone for Direct IP call
- Added Support of Alarm Monitoring
- Added Support of AI Noise Reduction
Bug Fix
- Fixed Device randomly cannot receive incoming calls
- Fixed Device alias for “Enable Speaker Key” function is inverted
- Fixed Device cannot register an extension using SRV over TCP
This is the initial version for WP836.
FIRMWARE VERSION 1.0.1.30
Product Name: WP816, WP826
Date: 9/14/2024
Firmware File Information:
Firmware file name: wp8x6fw.bin
MD5: 9275f89d7247e715d0a520b28f7622e8
Enhancement
- Update Device Web UI strings
- Added Support to disable voicemail popup [ENABLE VOICEMAIL POPUP]
- Updated Device LCD display for Spanish language
Bug Fix
- Fixed Letter "e” missing issue when the Italian language is used from LCD
New Features Overview
ENABLE VOICEMAIL POPUP
Web Configuration: This option can be found under device web UI→ Phone Settings → Call Settings → Others:
Functionality: If enabled, the phone will show a pop up upon receiving an voicemail.
Pvalues
| Pvalue | Description | Value Range | Default |
|---|---|---|---|
| 22563 | <New Pvalue> Enable Voicemail Popup | Number : 0 - No 1 - Yes | 0 |
FIRMWARE VERSION 1.0.1.18
Product Name: WP816, WP826
Date: 7/14/2024
Firmware File Information:
Firmware file name: wp8x6fw.bin
MD5: a917bc6a78e0fdbff7c2df799ce3bfc0
Enhancement
- Added Support of Enhanced Call Park
- Added Support of Number key configurations on the dial pad
FIRMWARE VERSION 1.0.1.14
Product Name: WP816, WP826
Date: 6/19/2024
Firmware File Information:
Firmware file name: wp8x6fw.bin
MD5: fc31b54c5d2a4bb78fa482f0a126bdcb
Enhancement
- Improved Bluetooth operational stability
- Optimized Wi-Fi stability
FIRMWARE VERSION 1.0.1.9
Product Name: WP816, WP826
Date: 5/22/2024
Firmware File Information:
Firmware file name: wp8x6fw.bin
MD5: 0f579d28e5c7a0dd2ba3e683eec71131
This is the initial version for WP816, WP826.
