Seems like PCB version agb-e11-01 can work as a drop in replacement for any gba game that ram on sram battery saves. To do so I swapped the roms from the two different games. in this case I swapped megaman battle network 1's rom onto the pcb and it worked perfectly.
Thats really it!
View attachment 104716 View attachment 104717 View attachment 104708
Thats really it!
View attachment 104716 View attachment 104717 View attachment 104708