Unknown — Error 1004 Mi Unlock

Knowing the OS version can help narrow down if you need specific HyperOS community permissions first.

If you are using your phone's mobile hotspot to provide internet to your PC, the connection drops the moment the phone enters Fastboot mode. This triggers Error 1004 because the PC loses the internet required to check the device ID.

Unlike Error 10008 (device not found) or timeout errors, Error 1004 usually pops up at or 99% of the verification process. It tells the user: "Your device is ready, but Xiaomi's server is rejecting this specific unlock attempt right now." Unknown Error 1004 Mi Unlock

Specific versions of the Mi Unlock tool (like version 7.5) have been reported to trigger this error more frequently than others.

: The tool needs a constant ping to Xiaomi's servers to verify your Device ID. Knowing the OS version can help narrow down

Don't worry; we've got you covered. Here are some solutions and workarounds to help you overcome the Unknown Error 1004:

VPNs, custom DNS, or firewalls blocking Xiaomi’s backend servers. Step-by-Step Solutions to Fix Error 1004 1. Check PC Internet and Network Settings Unlike Error 10008 (device not found) or timeout

Once you successfully unlock, take these steps before your next unlock attempt:

Why this works forces Xiaomi’s server to re-evaluate your "binding period." Some regional servers cache your SIM ID incorrectly. Changing the SIM refreshes the handshake.