There are four guides so far, please select one below
VA0 Motherboard Serial Number normally Starting 05 - DA Retro Saturn V1.2 chip
171-7131a Motherboard Serial Number Starting AD65 - DA Retro Saturn V1.2 chip
VA9 Motherboard Serial Number Starting AD69 - DA Retro Multichip V1.1
VA13 Motherboard Serial Number Starting 17 - DA Retro Saturn V1.2 chip
Although the installs are done with different chips the method is similar just connect to different pads on the chips.
Any questions or suggestions please let me know, just send me an emailI am also interested in ways that other people install these chips, i am happy to receive your install photos.