Even with careful preparation, things can go wrong. Here is how to fix them:
The Baofeng DM-1702 is a dual-band DMR-capable handheld. A firmware update can add bug fixes, improve digital/analog operation, and patch radio stability issues. Firmware updates are device-specific and can carry risk (bricking, losing settings, or invalidating warranties) if done incorrectly.
If you want to turn your $80 radio into a powerhouse, install OpenGD77. The process is similar but uses different software.
Step 1: Backup First Use the official Baofeng CPS to read your radio and save your codeplug (channels, contacts). OpenGD77 uses a different codeplug format, but you can export your channels as CSV.
Step 2: Download the OpenGD77 Loader
Go to the official OpenGD77 site and download the latest OpenGD77_Loader.exe.
Step 3: Enter DFU Mode (Same as above: PTT + Monitor button while powering on).
Step 4: Flash the OpenGD77 Firmware Run the loader. It will detect your radio in DFU mode. Select the OpenGD77 firmware file (for the DM1702, not the GD-77). Click "Write to Flash." The loader will first erase the stock firmware, then write the new one.
Step 5: Install the OpenGD77 CPS You cannot use Baofeng CPS anymore. Download and install the OpenGD77 Codeplug Programmer. This software is vastly superior to the stock Baofeng CPS.
Step 6: First Boot When you turn on the radio, it will boot into OpenGD77. Initial boot takes 10 seconds. You will see a color-coded display, proper channel names, and advanced DMR settings.
This process assumes you are updating to an official Baofeng firmware file (e.g., updating from S018 to S022).
Step 1: Install Drivers Connect your programming cable to the PC (do not connect to the radio yet). Install the drivers for the cable. For FTDI cables, use the latest Virtual COM Port drivers from FTDIchip.com.
Step 2: Prepare the Radio Turn off the DM1702. Connect the programming cable to the radio’s side port (the same port used for programming channels). Insert the USB end into your PC.
Step 3: Enter DFU Mode (Device Firmware Update) This is the critical step. Turn on the radio while holding the PTT (Push-to-Talk) button AND the Monitor button (the top button on the left side, just above PTT). Hold them for 3 seconds. The screen will remain blank, and the LED may flash. Your PC should make a "device connected" sound. baofeng dm1702 firmware update
Step 4: Launch the Firmware Tool Open the "Baofeng Firmware Upgrade Tool." Select the correct COM port (check Windows Device Manager under "Ports").
Step 5: Load and Flash
Click "Open File" and select your downloaded .bin firmware file. Click "Upgrade." The progress bar will move from 0% to 100%. Do not touch the cable or the radio. This takes 2-3 minutes.
Step 6: Verify
The tool will say "Success." Power cycle the radio (turn off, remove the cable, turn back on). Check the firmware version in the menu: Menu -> Radio Info -> Firmware Version.
The Baofeng DM-1702 stock firmware is acceptable for a beginner, but it hides the true potential of this $80 radio. By performing a Baofeng DM-1702 firmware update to OpenGD77, you effectively turn your radio into a device that competes with $300 DMR handhelds.
The final verdict:
Remember the golden rules: Back up your calibration data, use a fully charged battery, and install the STM32 drivers correctly. If you follow this guide, you will successfully breathe new life into your DM-1702, giving you a faster, clearer, and more powerful radio.
Last updated: October 2025. Always check the latest OpenGD77 release notes for DM-1702-specific patches.
The Baofeng DM-1702 (often labeled as the DM-X) occupies a precarious position in the world of budget Digital Mobile Radio (DMR). While the prospect of a firmware update suggests potential for bug fixes or new features, the reality for most users is a journey fraught with technical hurdles and high stakes. The Technical Labyrinth
A primary challenge is the existence of multiple hardware variants that appear identical but require specific software paths.
Variant Disparity: Some units ship with L05.01.004 firmware, requiring RT72 programming software, while others utilize v02.02.014, which demands the MD CPS software.
The "Decrypted" Requirement: Users have found that standard firmware files often fail to load; specifically, files like fw_2.2.22-decrypted.zip are frequently necessary for a successful flash.
Hidden Menus: Advanced users can access hidden calibration menus via the CPS software using the password 66660501, though experts strongly advise against modifying these factory values without specialized equipment. Update Procedure and Risks Even with careful preparation, things can go wrong
Updating the DM-1702 is not for the faint of heart. The standard procedure involves:
Entering DFU Mode: Connecting the radio via a standard micro-USB cable and powering it on while holding the '#' key.
Software Interface: Using specialized tools, such as the MD1702-tools available on GitHub, to push the new firmware image.
The Risk of "Bricking": Reports of radios becoming completely unresponsive ("bricked") after an update are common. Because Baofeng does not consistently release official recovery files for all hardware versions, a failed update can turn the handset into an unrecoverable "paperweight". Community Consensus Baofeng dm-x firmware update available?
Updating the firmware on your Baofeng DM-1702 Go to product viewer dialog for this item.
(Tier II DMR) is essential for fixing bugs, improving GPS stability, and ensuring compatibility with the latest digital radio features. Preparation & Requirements Before starting, ensure you have the following:
Hardware: A dedicated Baofeng USB programming cable (ensure the drivers are installed on your PC).
Battery: Ensure the radio is fully charged to prevent a power-off during the write process, which can brick the device.
Software: Download the official DM-1702 Firmware Upgrade Tool and the specific firmware .bin or .s19 file from a trusted source like Baofeng's official site or Radioddity. Step-by-Step Update Process 1. Enter DFU (Download) Mode
The radio must be in a specific bootloader state to accept new firmware: Turn the radio OFF.
Press and hold the Side Button 1 (typically the button above the PTT) and the PTT button simultaneously. While holding these buttons, turn the radio ON.
The LED indicator should flash (often green/red) or remain steady, indicating it is in firmware update mode. The screen will typically remain blank. 2. Connect to PC Remember the golden rules: Back up your calibration
Plug the programming cable into the radio’s side port and the other end into your PC’s USB port.
Open Device Manager on your PC to verify which COM Port has been assigned to the cable (e.g., COM3). 3. Run the Upgrade Tool Launch the DM-1702 Upgrade Software. Select the correct COM Port from the dropdown menu.
Click Open or Browse to locate and select the firmware file you downloaded.
Click Download or Update. A progress bar will indicate the status. Do not disconnect the cable or turn off the radio during this time. 4. Finalize and Reset
Once the software displays "Success" or "Update Complete," the radio may reboot automatically. If it doesn't, turn it off and unplug the cable.
Factory Reset (Optional but Recommended): It is often best practice to perform a reset after a major firmware jump to prevent database conflicts.
Check the "About" or "Version" menu in the radio settings to confirm the new firmware version is active. Troubleshooting Tips
Connection Failed: Check that the programming cable is pushed firmly into the radio; these dual-pin connectors often require a very tight fit.
Driver Issues: If the COM port doesn't appear, reinstall the Prolific or CH340 USB-to-Serial drivers.
DMR ID: Firmware updates usually don't erase your codeplug, but it is wise to back up your codeplug using the standard programming software before you begin.
Here’s an interesting, concise write-up on the Baofeng DM-1702 firmware update — aimed at amateur radio enthusiasts and tinkerers.
OpenGD77 uses a "Contacts" and "Zones" system that is much more logical than Baofeng’s. You cannot copy-paste your old codeplug.