RT-73? [Impossible to support because it uses undocumented CPU / DMR chips]
Posted: Mon Feb 06, 2023 6:42 am
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Amateur radio firmware for the GD-77, GD-77S, DM-1801, DM-1801A, RD-5R, MD-9600/RT-90, MD-UV380/RT-3S, DM-1701/RT-84 and MD2017/RT-82 radios
https://www.opengd77.com/