Enable USB Debugging and OEM Unlocking in your phone's Developer Options.
| Error Code | Message | Cause | Solution | |------------|---------|-------|----------| | | Account not bound. | Did not bind in Developer Options. | Go to Mi Unlock Status on phone, tap "Add account and device" (use cellular data). | | 20091 | SIM card mismatch. | SIM in phone differs from account’s registered SIM. | Insert the same SIM used to register the Xiaomi account. | | 30001 | Device is not supported for unlock. | Carrier-locked device or region restrictions (e.g., Indian variants). | Request unlock from carrier. No tool can bypass this. | | 40101 | Time not met – wait [X] hours. | Standard Xiaomi waiting period. | Wait exactly the hours shown. Do not change account or re-bind. | | 86012 | Server authentication failed. | Account flagged or network issues. | Use a VPN (Europe or Singapore server). Retry after 24 hours. | mi unlock 6.5.406
The device must be linked to a valid Mi Account with "Mi Unlock" permissions enabled in the developer settings. Driver Installation: Enable USB Debugging and OEM Unlocking in your
In the world of Xiaomi enthusiasts, few topics generate as much discussion—and occasional frustration—as the official bootloader unlocking tool. Among the many versions released over the years, holds a special place. Whether you are a seasoned custom ROM developer or a first-time user trying to escape MIUI’s constraints, understanding this specific tool version is crucial. | Go to Mi Unlock Status on phone,
: Checks the "Mi Unlock Status" of the connected device to see if it is successfully bound to the user's account. HyperOS Support