Firmware for DMR transceivers using the NXP MK22 MCU, AT1846S RF chip and HR-C6000 DMR chipset. This includes the Radioddiy GD-77, Radioddity GD-77s, Baofeng DM-1801 and Baofeng RD-5R.
Development of OpenGD77 appears to have resumed, with firmware and code being released at https://www.opengd77.com/downloads/. The authors have unfortunately chosen not to publish the new code on GitHub. The sole purpose of this repository is therefore to preserve the code.
The firmware generated by this project includes binary code from the official Radioddity firmware. The CODEC from the original binary is re-used to avoid intellectual property infringement. Distributing the resulting binary is therefore problematic from a intellectual property perspective.