Baofeng Dm1702 Firmware Update Info
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.
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. Disclaimer: Flashing firmware carries inherent risks. The author is not responsible for bricked radios. Always verify hardware compatibility and download firmware from official sources.
(Same as above: PTT + Monitor button while powering on). baofeng dm1702 firmware update
You cannot use Baofeng CPS anymore. Download and install the OpenGD77 Codeplug Programmer. This software is vastly superior to the stock Baofeng CPS.
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. Run the loader
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.
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. Click "Write to Flash
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 . Advanced Upgrade: Installing OpenGD77 on the Baofeng DM1702 If you want to turn your $80 radio into a powerhouse, install OpenGD77. The process is similar but uses different software.