Xiaomi Mi 5 Diagnostic Drivers
By mistake I set the band_ref to USA and thereby disabled my first sim card slot . I read up on it and knew that it's fixable with the right drivers, so I spent my Sunday searching for the Qualcomm Diagnostic (& more) drivers. This topic lists em. Usually, these drivers are part of the Mi PC Suite, but that thing doesn' t support Android 6 or the Mi5 right now. So it is useless to us right now!
Tested on: Windows 10 64 Bit (in Test Mode)
Or just get it from here: Mi5_Qualcomm_Drivers.rar
How to enable the Diag mode
Link: Qualcomm NVRAM Settings & 2G/3G/4G LTE Band Config
Link: [TUTORIAL] How to unlock more LTE frequency bands on Mi Note Pro
Questions & Answers
Q:Did I try to unlock bands: A:NO, I did not.
Q:Will it be possible to unlock more bands with these drivers? A: Maybe.