| Feature | OTG dload Mode | eRecovery (Wi-Fi) | OTA (System Update) | |---------|---------------|-------------------|---------------------| | | No | Partial (needs recovery) | Yes | | User data preserved | No (full wipe) | Optional | Yes | | Bypasses bootloop | Yes | Sometimes | No | | Firmware type | Full service ROM | Latest official | Incremental/Full | | Signature check | Bootloader-level | Recovery-level | Android-level | | Risk level | High (brick if wrong file) | Low | Minimal |