Baofeng Dm1702 Firmware Update -

If the screen lights up with the Baofeng splash screen, you have won. But the war is not over. A firmware update wipes the codeplug. Your 500 contacts, your talkgroups, your color codes—gone. You must now reload your backup .rdt file via the CPS.

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. baofeng dm1702 firmware update

There are two main paths you can take for firmware updates. This is the most important decision in this process. If the screen lights up with the Baofeng

Before doing anything, connect your radio to your PC using the official Baofeng CPS software and perform a "Read" operation. Save this .codeplug file somewhere safe. If anything goes wrong, you can restore your original settings. The Rule:

Before downloading any files, you must check your radio's current hardware version. Installing the wrong firmware for your hardware version is the most common way to brick a Baofeng.

The Rule: