Mi Unlock Tool 1004 Error (Top 10 RECOMMENDED)

He opened Settings > Mi Account on the phone. The top showed an unfamiliar email—the previous owner’s. That confirmed it: the phone was still bound to someone else.

He tried the usual tips—rebooting, reinstalling drivers, using a different USB port. Nothing worked. So he dug deeper.

He downloaded the official MI Unlock Tool, connected his phone, and followed every guide. But just as hope peaked, a red message appeared: mi unlock tool 1004 error

He later wrote a forum post: “Don’t fight Error 1004. Respect it. Contact the previous owner or return the phone if you can’t. It’s the lock keeping your phone safe from thieves.”

Error 1004 is Xiaomi’s security mechanism preventing an unauthorized MI account from unlocking a device. Unlike simple password errors, 1004 means: “This phone is locked to a different Mi account, and you haven’t proven ownership.” He opened Settings > Mi Account on the phone

Alex had just bought a used Xiaomi phone. It was a great deal—perfect hardware, a vibrant screen, but it was tied to the previous owner’s MI account. To truly make it his own, Alex needed to unlock the bootloader, the first step to installing a custom ROM or simply freeing the device.

After 72 hours, Alex unlocked the bootloader successfully. Error 1004 wasn’t a bug—it was a feature to prevent theft. He learned that the error means: “Prove you own this device by using the original account or having it removed properly.” He downloaded the official MI Unlock Tool, connected

Frustrated, Alex searched forums. Some called it the "gatekeeper error." Here’s what he learned.

Alex reset the phone, logged in with his MI account, and waited 72 hours (a required cooling period for his model). This time, when he ran MI Unlock Tool, no 1004 error appeared. The progress bar moved—slowly, surely.