Updating the bootloader is riskier than updating the main firmware. If the bootloader corrupts, the radio cannot enter DFU mode, and you must have an external ST-Link programmer. Stick to updating only the firmware.bin or .sgl file. The Baofeng DM-1702 stock firmware is acceptable for a beginner, but it hides the true potential of this $80 radio. By performing a Baofeng DM-1702 firmware update to OpenGD77, you effectively turn your radio into a device that competes with $300 DMR handhelds.
The Baofeng DM-1702 is a popular entry-level DMR (Digital Mobile Radio) handheld transceiver. It is beloved by amateur radio operators for its dual-band capability, dual-time-slot DMR operation, and its unique ability to run Open Source firmware like OpenGD77 . However, like any sophisticated electronic device, its performance, stability, and feature set are heavily dependent on its firmware. baofeng dm1702 firmware update
Last updated: October 2025. Always check the latest OpenGD77 release notes for DM-1702-specific patches. Updating the bootloader is riskier than updating the