Ios 14 pababa puwede yan sa chek pero ios 15 negative pa po .ios 15 up need ρáíd server or unlocker .ios 14 pa baba need bypass or ρáíd server.
ρáíd server :fully unlock ibig sabihin kahit ireset or flash update mo hindi mag lalock unless alam mo iclound.
Bypass: bawal reset and update...