Ok just installed a blue dot matrix infinity homebrew to my v12 (slimeline PAL). And its just acting as if there isnt any chip in, it still plays original games fine but wont boot a firmware upgrade cd or an backups (wasnt expecting it to play backups without the firmware upgrade)...
Ive checked all points and they all seem fine tested 3.3v and gnd with a multimeter an they seem fine too.
anyone any ideas ? does the homebrew chip work in a v12??