step 2: Change module wifi red mark ( Can use wifi ipad pro wifi version or wifi of ipad air 2 wifi version )
step 3: iPad Air 2 will active DFU mode. download firmware ipad air 2 wifi and restore.
If you don’t change IC wifi of ipad air 2 wifi version. After restore wifi will hide and need jailbreak for fix wifi. but when restore again —> wifi hide.