I confirm this same issue with AES 3.5: with standard BIOS console reset itself, with UNIBIOS 4.0 error appears (bad contact). I don't have the original cartridge (I don't like this game, that's the reason I've never found this error so far)
I've already reported it to him and he said that happens only with "old" revision. He gave me a file but it's a MAME format I think so I can't test it on my multicart.
you are talking about Darksoft man...I'm more scared to spend money on TO product than DS to be honest, history has spoken clearly. The point about "self serving" is in any case something important to get, probably not for every multicart customer