(also known as the DM-X), you must use specific Customer Programming Software (CPS) and enter a dedicated bootloader mode. There are two distinct hardware versions of the
Connect the USB programming cable from the PC to your radio's microphone jack. Step 4: Open the Update Software Launch the software.
Take your time, read the instructions twice, and you will be rewarded with a more stable, more capable, and more enjoyable DMR experience. Your DM1702 has hidden potential; a firmware update is the key to unlocking it.
Performing a is the single best upgrade you can do for this handheld. Whether you are fixing a nagging audio dropout with the official S022 firmware or completely transforming the radio into an OpenGD77 beast, the process is straightforward—provided you respect the hardware version and use a reliable cable. baofeng dm1702 firmware update
Unlike a Baofeng UV-5R, you cannot just load firmware over USB. The DM-1702 needs its updated before any custom firmware will stick.
If you encounter errors during the update, review these common troubleshooting scenarios: "Connection Timeout" or "Com Port Open Error"
The screen should remain black, but a green light may turn on, indicating it is in firmware update mode. Flash Firmware Open the firmware upgrade tool within your CPS software ( Program -> Tool Load the firmware package ( and wait for the "success" message before rebooting. 3. Custom Firmware (OpenGD77) Unlike the popular DM-1701 or DM-1801, the DM-1702 is currently NOT supported (also known as the DM-X), you must use
One of the most common decisions for owners of the DM-1702 is whether to use the stock firmware or the custom OpenGD77 firmware. The table below breaks down the key differences to help you decide:
Enhanced compatibility with talkgroups and improved voice quality.
Once the software confirms completion ("Update Successful"), turn off the radio and disconnect the cable. Turn the radio back on normally. It is highly recommended to perform a factory reset via the radio menu ( Menu > Set > Utilities > Radio Set > Factory Reset ) to ensure old system variables do not conflict with the new firmware. Troubleshooting Common Update Issues Take your time, read the instructions twice, and
Firmware compatibility is split between two main versions. Check your current firmware in the radio menu first:
The light on top of the radio should start flashing, indicating it is in firmware update mode (sometimes the screen will remain blank). 3. Flash the Firmware