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.
Open the "Baofeng Firmware Upgrade Tool." Select the correct COM port (check Windows Device Manager under "Ports").
(Same as above: PTT + Monitor button while powering on). baofeng dm1702 firmware update
The Baofeng DM1702 is a popular choice for amateur radio operators who want a dual-band, dual-mode (Analog and DMR) handheld transceiver without breaking the bank. However, like many Chinese radios, the stock firmware shipped from the factory is often a "minimum viable product." To unlock the true potential of your DM1702—or simply to fix persistent bugs—performing a Baofeng DM1702 firmware update is essential.
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. Connect your programming cable to the PC (do
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. 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. Open the "Baofeng Firmware Upgrade Tool
Go to the official OpenGD77 site and download the latest OpenGD77_Loader.exe .
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