After very long time I decided to update a bit ReCube and make it more automatic.
ReCube now is able to detect cartridge type and basis on it use appropriate secure key during memory operation.
Additionally I changed schematic to be more readable. Some of you do not use KiCad so I decided that schematic is enough to make own board.
There is also a data pin changed, currently it is A0. The problem is that D13 which was before is shared with Arduino LED what causes some problems. But for all which have already old board there is prepared firmware in zip file.
Here is link to ReCube V2: ReCubeV2Light