I'll start off by saying that the ak2i CAN be updated case in point this update, I found this while scanning some chinese forum. download
NOTE: the dsl one can be used to salvage any bricked ak2i's caused by this update but must be used on a dsl or ds phat, the chance of bricking should be very low but you'd best have a fully charged battery or be plugged into mains before updating just in case.
Enjoy!
EDIT:
Apparently theres a newer update file around now not sure whats changed but you can find it here
NOTE: the dsl one can be used to salvage any bricked ak2i's caused by this update but must be used on a dsl or ds phat, the chance of bricking should be very low but you'd best have a fully charged battery or be plugged into mains before updating just in case.
Enjoy!
EDIT:
Apparently theres a newer update file around now not sure whats changed but you can find it here