Baofeng: Dm1702 Firmware Update
The "holy grail" for this radio is the OpenGD77 firmware. This is open-source software written by the amateur radio community.
Updating the Baofeng DM-1702 is not for the faint of heart. It is a collision of cheap manufacturing, legacy Windows drivers, and the stubborn ingenuity of the ham radio community. It is a process that teaches you more about USB stacks than you ever wanted to know.
When you succeed—when the blue backlight glows and the DMR LED blinks green—you aren't just using a radio. You are maintaining a digital artifact. You have taken a piece of mass-produced plastic and, through sheer will and a sketchy driver, bent it to your will.
That is the magic of the DM-1702. Not the hardware, but the ritual.
Stock firmware often struggles to properly monitor both timeslots on a DMR repeater. Updated firmware (especially OpenGD77) allows true dual-slot monitoring, meaning you won't miss a call on Slot 2 while listening to Slot 1.
Performing a Baofeng DM1702 firmware update is the single best upgrade you can do for this handheld. Whether you are fixing a nagging audio dropout with the official S022 firmware or completely transforming the radio into an OpenGD77 beast, the process is straightforward—provided you respect the hardware version and use a reliable cable.
Take your time, read the instructions twice, and you will be rewarded with a more stable, more capable, and more enjoyable DMR experience. Your DM1702 has hidden potential; a firmware update is the key to unlocking it.
Disclaimer: Flashing firmware carries inherent risks. The author is not responsible for bricked radios. Always verify hardware compatibility and download firmware from official sources. baofeng dm1702 firmware update
Updating the firmware on your Baofeng DM-1702 Go to product viewer dialog for this item.
(Tier II DMR) is essential for fixing bugs, improving GPS stability, and ensuring compatibility with the latest digital radio features. Preparation & Requirements Before starting, ensure you have the following:
Hardware: A dedicated Baofeng USB programming cable (ensure the drivers are installed on your PC).
Battery: Ensure the radio is fully charged to prevent a power-off during the write process, which can brick the device.
Software: Download the official DM-1702 Firmware Upgrade Tool and the specific firmware .bin or .s19 file from a trusted source like Baofeng's official site or Radioddity. Step-by-Step Update Process 1. Enter DFU (Download) Mode
The radio must be in a specific bootloader state to accept new firmware: Turn the radio OFF.
Press and hold the Side Button 1 (typically the button above the PTT) and the PTT button simultaneously. While holding these buttons, turn the radio ON. The "holy grail" for this radio is the OpenGD77 firmware
The LED indicator should flash (often green/red) or remain steady, indicating it is in firmware update mode. The screen will typically remain blank. 2. Connect to PC
Plug the programming cable into the radio’s side port and the other end into your PC’s USB port.
Open Device Manager on your PC to verify which COM Port has been assigned to the cable (e.g., COM3). 3. Run the Upgrade Tool Launch the DM-1702 Upgrade Software. Select the correct COM Port from the dropdown menu.
Click Open or Browse to locate and select the firmware file you downloaded.
Click Download or Update. A progress bar will indicate the status. Do not disconnect the cable or turn off the radio during this time. 4. Finalize and Reset
Once the software displays "Success" or "Update Complete," the radio may reboot automatically. If it doesn't, turn it off and unplug the cable.
Factory Reset (Optional but Recommended): It is often best practice to perform a reset after a major firmware jump to prevent database conflicts. Stock firmware often struggles to properly monitor both
Check the "About" or "Version" menu in the radio settings to confirm the new firmware version is active. Troubleshooting Tips
Connection Failed: Check that the programming cable is pushed firmly into the radio; these dual-pin connectors often require a very tight fit.
Driver Issues: If the COM port doesn't appear, reinstall the Prolific or CH340 USB-to-Serial drivers.
DMR ID: Firmware updates usually don't erase your codeplug, but it is wise to back up your codeplug using the standard programming software before you begin.
The Baofeng DM-1702 is a popular entry-level dual-band DMR (Digital Mobile Radio) handheld. While the hardware is generally capable, the stock firmware often leaves much to be desired regarding user interface, stability, and features. Updating the firmware can unlock the true potential of the radio, transforming it from a basic transceiver into a powerful tool for amateur radio use.
Unlike a Baofeng UV-5R, you cannot just load firmware over USB. The DM-1702 needs its bootloader updated before any custom firmware will stick.
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.
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