GM600 to GM350 or GM950

[PH0DX]

Hello,

I have several GM600's they are sold for little money here in the
Netherlands since the Traxis Trunking network became obsolete..

I think it is possible to convert a GM600 into a GM350 or GM950.
I know i have to add an external codeplug (eeprom x25168) and some
SMD components.
I looked at the schematic of an GM350 and could not identify all the smd parts
missing on the board of the GM600 near the Microprocessor.

But before i can flash the radio with new firmware i think i have to clear
the internal codeplug, to let the radio forget what model it is.

Does anybody know how to do that ?
It can't be done with the original GM600 Windows and GM600 Dos software.
Neighter does the radio listen to Wookie or other LAB software..

Any ideas ??

Thanks,
Lourens.