Redmi S2 locked on Fastboot

Hi Max,

I followed your instructions in the video and, when trying to do the Step 6 on MiFlash software:

Click on “refresh” and make sure your Xiaomi device shows up.

The Redmi S2 didn’t show up, and I get pop up windows saying: Length cannot be less than zero. Parameter name: length.

Please let me know what to do to solve this issue. Thanks!