Before I tried the upgrade, my radio had quit allowing me to write to it.
I figured something was corrupt so I looked for a firmware upgrade, misread the one I found v6.01.05.006, and when I installed it, my serial changed but was no longer a match.
My radio model is PD782-00000000-000000-v.1.0.b
My original version firmware on the back of the radio says A2.05.06.000. The radio still starts up and shows the new firmware but won't let me read or do anything. When I try to read it, a message comes up that "model setting isn't a match". I thought if I could get the original firmware back into the radio, it would hopefully cure it. Have been all over the net and cannot find it. If you could help, would be appreciated. My windows is Windows 7 Ultimate 32 Bit.