Installed #OpenGD77 on my old #RD5R . No problems with the firmware installation, and at least some parts of my old code plug survived.

The documentation is pretty good all in all, but since I have an RD-5R and not a #GD77 all of the references to which key does what are wrong. (There is no green button, there are two orange buttons etc.) I'll be able to work through it once I get some more hands on time.

I'll figure out the analog side first.

Old radio, new firmware = new radio!