no you dont. all you need to do is get modified 3.41, then downgrade to that. then get original firmware lower then 3.41 and downgrade to it again. it wont have to be modified
i meant with ps3 on service mode
but im really not sure
I Know, is not that way m8 you need to downgrade with the Lv2diag.self files (Blank USB), u cannot do it that way, the Downgrade jailbreaks still put PS3 in Service mode but don't recognize the first Lv2diag file so u cannot downgrade thats what im tellin :bro: