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 .
Navigate to to open the firmware upgrade window. Load and Flash: baofeng dm1702 firmware update
: This occurs if you flash a version of the firmware incompatible with your hardware revision. Boot the radio back into DFU mode and flash a previous, verified working firmware version. The tool will say "Success
Once the software displays a "Successful" message, the update is complete. Step 6: Post-Update Reboot Disconnect the cable. Turn the radio and then back on normally. remove the cable
Updating the firmware on your (also sold as the Baofeng DM-X