yeah i'm pretty good with my 10.7 emunand, don't need sysnand anyway, idc about gba games =Pyes, restored 10.7 emunand thru hardmod with no probs. it booted fine but can't downgrade. restoring 9.2 clean sysnand still resulted to a brick. so CFW is a no go for this unit.
you're lucky you are already on a9lh.