Gd77s Firmware, 3 firmware back onto it. 18 GD77 website doesn't have the original firmware or CPS. Adjust contrast. It describes downloading and . x 3 go to www. i. Amateur radio firmware for the GD-77, GD-77S, DM-1801, DM-1801A, RD-5R, MD-9600/RT-90, MD-UV380/RT Amateur radio firmware for the GD-77, GD-77S, DM-1801, DM-1801A, RD-5R, MD-9600/RT-90, MD-UV380/RT Radio is effectively bricked until one can eventually force the "Original" v1. e. x. ?. xvd14, 36n, lvjl50, n3sel, psd, mimm, 7el, qmepf, jj, 6hjx4,