I don't remember if the Psion was BGA or not; I'm guessing not which makes soldering it substantially easier. In a similar vein, you could double the RAM on th

I don't remember if the Psion was BGA or not; I'm guessing not which makes soldering it substantially easier. In a similar vein, you could double the RAM on the original Xbox by soldering a second memory chip to the unpopulated pads on the underside of the board.