Here's a step-by-step guide to updating the firmware on your Baofeng DM-1702:
Firmware and CPS are typically found on BaofengRadio.com or Baofeng Tech (BTECH) .
: The radio is not properly in DFU mode, or the Windows COM port driver is failing. Check Device Manager to verify that the USB serial port is recognized without errors. baofeng dm1702 firmware update
Most Baofeng software is designed for Windows; if you encounter issues, try running the software in Compatibility Mode for Windows 8 . Step-by-Step Firmware Update Guide
Unlike the DM-1701, the DM-1702 is not compatible with the popular OpenGD77 custom firmware. The Update Process Here's a step-by-step guide to updating the firmware
Open the firmware upgrade tool within your CPS and select the correct file.
Connect the USB cable to both the PC and the radio (while the radio is off). Most Baofeng software is designed for Windows; if
Firmware compatibility is split between two main versions. Check your current firmware in the radio menu first:
This happens if you flash GPS firmware onto a Non-GPS radio, or vice versa. Redownload the alternative version of the firmware and repeat the DFU flashing process to restore the radio.