(1) HUAWEI ဖုန္းမ်ားရဲ႕ Hard Reset Keys (End/Send Keys ပါေသာဖုန္းမ်ား)

HUAWEI  C8500 / C8600 / U8500 / U8600 / ...etc

(1)  FIRMWARE ( UPGRADE / DOWNGRADE )
    . power + volume up + end key

(2)  RECOVERY MODE
    . power + volume down + end key

(3)  FIRMWARE BACKUP / RESTORE (System File )
    . power + volume up + send key