Unlock Bootloader Vivo Y55A By BST Nhận Unlock Bootloader Vivo Y55A Qua Teamviewer Mã:[IMEI Repair] > Backup phone original QCN before Repair IMEI. 1. Connect phone to pc via USB cables. 2. Dail(*#558#) select ""Quality verification test", Enable "Debugging port" 3. Repair IMEI [Bootloader Unlock] 1. Enter fastboot mode (install drivers if needed) 2. Press "Bootloader Unlock" [Bootloader Relock] 1. Enter fastboot mode (install drivers if needed) 2. Press "Bootloader Relock" [Account Lock] 1. Enter Fastboot mode (install drivers if needed) 2. Press "Reset Account Lock" Tips: 1).If phone stuck after unlock, please Unlock bootloader and reflash firmware (or USERDATA parition only) to fix problem Bootloader Unlocking ... ok
