I have a problem with my RFJ cart. I plugged it into the SPI board and got Checksum Error 9921.
The SPI board had Viper Phase 1 in before, which still runs fine.
When I checked the Wiki I found the jumper issue for changing carts, but that didn´t help either. The main board is the V 2.0 PCB.
The jumper change does not trigger anything - no boot up mode or whatsoever.
As far as I see both carts are japanese.
Help would be really appreciated.
Here the pics:
