| Error Message | Solution | |---------------|----------| | “Account not bound to device” | Go to Developer Options > Mi Unlock status > Add account. Wait 7 days. Do NOT sign out of Mi account. | | “Couldn’t verify, wait 72 hours” | Normal. Set a reminder. | | “Current account is different” | You signed into a different Mi account on the PC tool. Use the exact one from the phone. | | “Fastboot not recognized” | Install Google USB drivers or the official Xiaomi USB driver. Try a USB 2.0 port. | | “Anti-rollback: flash error” | You tried to flash an old ROM after unlocking. Only flash MIUI 10 or later. | | Stuck in fastboot after unlock | Open Mi Flash Tool (not unlock tool), flash the latest fastboot ROM for sirius . |
A second warning will appear regarding device security. Click again. The tool will begin verifying your device and account. Important Note on the Waiting Period
You'll first need to enable the developer options on your phone. Go to and tap on the "MIUI Version" or "HyperOS Version" entry repeatedly (usually 5-7 times) until you see a toast notification that says "You are now a developer!". How to unlock Bootloader in XIAOMI Mi 8 SE with...
The initial bootup will take longer than usual as the device performs a factory reset.
With an unlocked bootloader, you can now: | Error Message | Solution | |---------------|----------| |
on the boot screen, indicating the bootloader is officially unlocked.
Unlocking the bootloader of your Xiaomi Mi 8 SE (codename: sirius) is the essential first step toward flashing custom ROMs, installing TWRP recovery, and gaining root access. This comprehensive guide walks you through the entire official process safely. Prerequisites and Preparations | | “Couldn’t verify, wait 72 hours” | Normal
: Must be inserted into the Mi 8 SE with mobile data active (Wi-Fi must be off during the binding process).