Almost never, especially on modern devices with file-based encryption (FBE). After fastboot erase userdata , the encryption key is destroyed. Data is cryptographically shredded.
Once downloaded, open a terminal in the folder and use: fastboot erase userdata – Wipes only user data. fastboot erase cache – Wipes the cache partition. fastboot -w – Performs a full factory reset. 2. Third-Party "Fastboot Reset" Tools fastboot erase tool download
Warning: These actions are irreversible and will delete data. fastboot erase cache Almost never, especially on modern devices with file-based
| Problem | Better Solution | Why | |---------|----------------|-----| | Forgotten lock screen | Use device recovery mode → Factory reset | No Fastboot required | | Selling phone | Use built-in “Factory Reset” with “Format SD card” | Sufficient for most users | | Boot loop | Flash stock ROM via manufacturer tool (Odin, Mi Flash, SP Flash) | Safer than selective erasing | | Remove FRP | Use dedicated FRP bypass tools (not erase-based) | Modern devices lock after partition erase | Once downloaded, open a terminal in the folder
Go to and tap "Build Number" seven times. Then, in Developer Options , enable USB Debugging and OEM Unlocking . 2. Boot into Fastboot Mode