Dm-1801 Firmware

The DM-1801 is a $70-$100 radio that, with a firmware upgrade, competes with $300 DMR handhelds. Stock firmware makes it a reliable workhorse. OpenGD77 turns it into a : dual-watch, satellite-ready, highly customizable, and free of the quirks that plague factory firmware.

: Flashing firmware or uploading codeplugs may revert the radio’s menu to Chinese. Users often need to navigate to

: Users who want the radio to work exactly as advertised in the manual with no experimental features. Custom Firmware: OpenGD77 / OpenDM1801 dm-1801 firmware

For the truly adventurous, the OpenGD77 source code is available on GitHub. You can:

Enable “DMR Filter: None” to monitor all talkgroups on a timeslot – perfect for listening to a busy repeater. The DM-1801 is a $70-$100 radio that, with

The DM-1801 enters firmware update mode via a different USB PID/VID. To avoid conflicts:

Flashing custom firmware . However, you can re-flash the stock DM-1801 firmware (available from Radioddity support) before sending the radio for repair. No permanent hardware mod is required. : Flashing firmware or uploading codeplugs may revert

OpenGD77 removes some software frequency locks. You are still legally bound by your country’s amateur radio or commercial radio regulations. In the US, the DM-1801 is Part 90 certified with pre-programmed frequencies. Transmitting outside authorized bands (e.g., 144-148 MHz for US hams) is your responsibility.