after seeing war mechs videos ive been wanting to speedrun Pvz2 Any%, the problem is i play on ios. with the new updates removing the abilty to unlock all the worlds early, and apple being a funny company, is there anyway i can play older updates on ios without jail breaking my phone or do i just have to bite the bullet and switch devices.

Unfortunately, we don't know of any ways to do this for iOS, though we do have all the old version for Andriod (including BlueStacks emulator). If that interests you, join our Discord and someone can hook you up. If you want to keep playing iOS though, I recommend playing Ancient Egypt as an IL, which is the only category that really makes sense now (except the "new" All Worlds where you beat the game linearly, as now required). Good luck!