Thanks for the reply.
I know it's complicated but it's something that I would be excited to try and see if it's possible.
Flash it in an Easyflash I guess it's not possible
There's a discussion in the Lemon64 forum about an issue with EasyFlash 3 and some older boards, including the MAX. I don't know if similar issues apply to e.g. Versa64Cart and Kung Fu Flash.