Dm1702 Firmware Update |verified|: Baofeng

To update the firmware on a Baofeng DM-1702 Go to product viewer dialog for this item.

  1. Open the OpenGD77 CPS.
  2. Enter your DMR ID, contacts, and channels.
  3. Connect the radio (turned on normally).
  4. Click "Write to Radio."

: When connected, the radio may appear in Windows Device Manager as " No Printer Attached ." This is normal for this specific chipset. Backup First baofeng dm1702 firmware update

If the screen remains black, you have entered the Red Zone. Try the DFU mode again. If the PC doesn't see it, you need a "Boot Repair" cable—a specific resistor bridge that forces the CPU into recovery. Or, you can desolder the SPI flash chip. At that point, you realize the $70 radio has cost you three hours of your life, and you should have just bought a used Motorola. To update the firmware on a Baofeng DM-1702

Step-by-Step (Condensed)

  1. Open the radio – Remove battery, unscrew four Torx T6 screws. Locate the 4-pin SWD pad near the speaker.
  2. Wire ST-Link – Connect SWDIO, SWCLK, GND, and 3.3V (not Vbat!).
  3. Backup original firmware using STM32CubeProgrammer.
  4. Flash patched bootloader (.hex from OpenGD77 team).
  5. Load OpenGD77 firmware via the radio’s DFU mode (hold PTT+PF1 on power-up).
  6. Reassemble – Don’t forget thermal paste on the PA transistor.
Menu

To update the firmware on a Baofeng DM-1702 Go to product viewer dialog for this item.

  1. Open the OpenGD77 CPS.
  2. Enter your DMR ID, contacts, and channels.
  3. Connect the radio (turned on normally).
  4. Click "Write to Radio."

: When connected, the radio may appear in Windows Device Manager as " No Printer Attached ." This is normal for this specific chipset. Backup First

If the screen remains black, you have entered the Red Zone. Try the DFU mode again. If the PC doesn't see it, you need a "Boot Repair" cable—a specific resistor bridge that forces the CPU into recovery. Or, you can desolder the SPI flash chip. At that point, you realize the $70 radio has cost you three hours of your life, and you should have just bought a used Motorola.

Step-by-Step (Condensed)

  1. Open the radio – Remove battery, unscrew four Torx T6 screws. Locate the 4-pin SWD pad near the speaker.
  2. Wire ST-Link – Connect SWDIO, SWCLK, GND, and 3.3V (not Vbat!).
  3. Backup original firmware using STM32CubeProgrammer.
  4. Flash patched bootloader (.hex from OpenGD77 team).
  5. Load OpenGD77 firmware via the radio’s DFU mode (hold PTT+PF1 on power-up).
  6. Reassemble – Don’t forget thermal paste on the PA transistor.
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