| Method | Required State | Success Rate | Risk | |--------|----------------|--------------|------| | | Device off, vol +/- inserted via USB | Very high (brick recovery) | Low if proper firehose | | fastboot flash | Unlocked bootloader, bootloader mode | High | Partition mismatch possible | | Lenovo Smart Assistant (LSA) | Bootable OS or EDL | Medium | Requires login, limited regions | | OTA update.zip | Working OS | Low for full restore | Only updates, not full ROM |
A vibration.