Hacking Swapping the RAM of an M3 Perfect into an M3 Pro?

[machinoman]

I have collected an original M3 Perfect (the silver mini-SD version) and recently also acquired an M3 Pro (also mini-SD). The M3 Pro I got is one of the newer models, with a translucent black shell which is the same size as a normal GBA game. The M3 Perfect is a little older and sticks out a little bit.

I have read that the only physical difference between the two cards is the RAM chip, which is higher capacity on the M3 Perfect. I have some soldering equipment. Would it be possible to swap the RAM chip from the M3 Perfect into the M3 Pro? It would be nice to have a smaller M3 Perfect, and I have not had much luck locating one of the newer M3 Perfect mini SDs on eBay.

 

[Ryccardo]

First, find the datasheets for both memory chips and compare them to see if they are compatible (usually, packages/pinouts are near the start and how to decode model numbers near the end)

If they are physically compatible, the next question is whether all the address lines are in place on the board (probably yes) and if the firmware supports both capacities (not holding my hopes too high)...

Good luck!