Discovery DISCOVERY-Y D4 MT6572 5.1 OR 4.2.2 SIM NETWORK FIX DEAD FIX FIRMWARE 100% OK Gsm Fojor October 14, 2017 DISCOVERY-Y D4 MT6572 5.1 OR 4.2.2 SIM NETWORK FIX DEAD FIX FIRMWARE 100% OK …