1. Introduction
This manual provides comprehensive instructions for using the JL Forced Download Tools Updater, a versatile USB dongle designed for programming, debugging, and upgrading a wide range of JieLi Bluetooth chips. It covers various tool versions (V2.0, V3.0, V4.0) and guides you through the setup, operation, and troubleshooting processes.
The tool is driver-free and does not require additional software installation, simplifying the development and upgrade workflow for JieLi chips.
2. Specifications
| Feature | Detail |
|---|---|
| Product Name | JL DownLoad Tools |
| Application | Supports the full series of JL(JieLi) chips (AC690N, AC692N, AC695N, AC696N, AC697N, AC700N, AC701N, AD14, AD15, etc.) |
| Tool Versions | V2.0, V3.0, V4.0 |
| Type | Module (USB Programmer/Updater) |
| Drivers Required | No |
| Software Installation | No (uses batch files for download) |
| Usage | Connect female connector to computer, male connector to prototype/target board. |
| Package Size | 6.8 x 5 x 5 cm |
| Gross Weight | 0.038 KG |
2.1 Tool Version Comparison
Image: Comparison table detailing features of V2.0, V3.0, and V4.0 downloaders, including chip compatibility and key characteristics.
- V2.0 Downloader: Still in use, works well with chips having an external crystal oscillator. Supports the full range of Bluetooth chips. User-friendly, automatically enters download mode upon plugging in (no buttons).
- V3.0 Downloader: Suitable for chips like AD14, AD16N, etc. Supports the full range of Bluetooth chips. Features a function switch, indicator light, and button.
- V4.0 Downloader: Currently the primary version. Designed for chips without a crystal oscillator. Very effective. Supports firmware upgrades for the tool itself.
Note: The download principle and basic operation are identical across all versions. The female port connects to the computer, and the male port connects to the target device. Do not reverse connections.
3. Setup Instructions
3.1 Connecting the Tool
- Connect to Computer: Connect the female connector of the JL Forced Download Tool to a USB port on your computer. It is recommended to use a USB 2.0 port.
- Connect to Target Board: Connect the male connector of the tool to the target board (prototype/device) you wish to program or upgrade. Ensure the target board's main controller is powered on simultaneously.
- Verify Connection: Under normal conditions, both blue and red lights on the tool will stay on. The red light indicates power supply, and the blue light indicates download status.
Image: Diagram showing the V2.0 tool with its male head connecting to a sample board and the female connector plugging into a computer. Highlights "No key operation required" and applicable chip series.
Image: Step-by-step visual guide for connecting the USB port correctly, including a wiring diagram (J1, VBAT, USBDM, USBDP, GND) and a photo of the downloader plugged into a target board. Also shows a Device Manager screenshot.
Important: Ensure the male connector is inserted correctly into the target board. Inserting it in reverse is a common mistake and will prevent proper operation.
Image: Illustrates an incorrect (reversed) USB connection and advises to plug it in the opposite way, potentially using a male-to-male USB cable.
3.2 Driver and Software
The JL Forced Download Tool is driver-free for Windows and does not require any specific driver installation. No additional software installation is needed for its basic operation. The computer will recognize it as a "USB Mass Storage Device" in Device Manager.
Image: Screenshot of Windows Device Manager, highlighting "USB Mass Storage Device" and noting that large-capacity storage devices are driver-free. Recommends USB 2.0 interface.
4. Operating Instructions
4.1 General Download Process
- Ensure the tool is correctly connected to both the computer and the target board as described in the Setup section.
- When ready to upgrade, insert the male connector into the board. The blue light on the tool will normally turn off, indicating that you can start the download.
- Locate and double-click the appropriate batch file (e.g.,
download_fash_sdk.batordownload.bat) provided in your SDK or technical resources. - The download process will begin in a command prompt window. The download is considered successful only when the message "download complete" or similar success indication appears.
Image: Screenshot of a command prompt window showing the execution of a batch file (download_fash_sdk.bat) and the output indicating "download complete" for a successful operation.
Image: Another command prompt screenshot emphasizing that "download complete" signifies a successful download. Also notes that "Can't find" messages can often be ignored.
Image: Screenshot of a file explorer window showing various SDK files, with an arrow pointing to "download.bat" and instructions to double-click it for upgrade.
4.2 Specific Instructions for V4.0 Tool
The V4.0 tool has specific settings depending on whether the target chip has a crystal oscillator:
- For chips without a crystal oscillator (e.g., 608N, AD140N, AC104N): Open the tool's casing, set dip switch 2 to ON, and all other dip switches to OFF. Then press the "update" button to upgrade.
- For chips with a crystal oscillator (e.g., 695X, 692X, 693X, 697X, 696X): Open the tool's casing and set all dip switches to OFF. Then press the "update" button to upgrade.
- For AD15N chips: Follow the upgrade method provided in the SDK, typically using the serial port.
Image: Diagram of the V4.0 tool with text overlay explaining dip switch settings for chips with and without crystal oscillators, and LED behavior during idle and download modes.
LED Indicators:
- Idle: Red light stays on, green light is either steady or flashing (depending on mode and dip switch settings).
- Download Mode: Green light turns off, red light stays on.
5. Maintenance
The JL Forced Download Tool is a robust electronic device designed for durability. No specific routine maintenance is required. Keep the tool clean and dry, and store it in a safe environment away from extreme temperatures or humidity. Avoid physical damage to the connectors and internal components.
For V4.0 tools, firmware updates may be released by the manufacturer. These updates can be performed by the user following documented procedures, ensuring continued compatibility with future JieLi chips.
6. Troubleshooting
6.1 Common Download Issues
- Program not upgrading/downloading:
- Ensure the target board's main controller is powered on simultaneously when inserting the male connector.
- Check the USB connection. Try plugging and unplugging the connector a few times.
- Do NOT use a USB hub, USB docking station, or USB splitter. Connect directly to a computer USB port.
- Do NOT use the computer's USB 3.0 port. Use a USB 2.0 port.
- If one USB port fails, try switching to a different USB port on your computer.
- Test with a different target board if possible to isolate the issue.
- Tool not recognized in Device Manager:
- After connecting, a "USB Mass Storage Device" should appear in Windows Device Manager.
- If it doesn't appear, try re-plugging the tool.
- If a question mark appears next to the device, you may need to reinstall drivers (though the tool is generally driver-free, system conflicts can occur).
- Refer to the steps for "Program not upgrading/downloading" regarding USB port usage.
- "Can't find" messages during download: These messages often have no meaning and can be ignored as long as the "download complete" message appears.
Image: FAQ-style troubleshooting guide addressing issues like program not upgrading, emphasizing power, USB port selection (avoiding hubs/USB 3.0), and checking Device Manager.
7. User Tips
- Read Documentation: The manufacturer provides extensive documentation and video tutorials via a Google Drive link. It is highly recommended to review these resources for detailed guidance and to understand the download process thoroughly. Access Technical Resources Here.
- V2.0 for Bluetooth Chips: For updating Bluetooth chip firmware, the V2.0 tool is often recommended for its user-friendliness, as it automatically enters download mode without requiring button presses.
- Direct USB Connection: Always connect the downloader directly to a USB 2.0 port on your computer. Avoid USB hubs, docking stations, or USB 3.0 ports to prevent compatibility or power issues.
- Verify Target Board Power: Ensure your target board is powered on when attempting to download or upgrade firmware.
- Patience with Connections: If the download doesn't start immediately, try plugging and unplugging the tool a few times. This can sometimes help initiate the connection.
Image: Graphic indicating the availability of comprehensive technical documentation and resources on Google Drive, including user manuals, schematics, FAQs, and debugging guides.
8. Warranty and Support
For technical support, please refer to the comprehensive documentation and video tutorials available via the provided Google Drive link. These resources are continuously updated to ensure relevance and cover a wide range of common questions and advanced usage scenarios.
The manufacturer strives to provide reliable tools. If you encounter persistent issues that cannot be resolved with the provided documentation, please contact the seller for further assistance. Please note that the tool's function is solely for downloading; issues with the program's functionality after download are typically unrelated to the downloader itself.
