I flashed 7.2.9 and now have a locked bootloader after upgrading from 5.1. Is it possible to downgrade to version 6.12.22 somehow and follow your procedure after reverting to 5.1 (hopefully re-enabling my previous unlocked bootloader) - or is the official unlock SMS from Xiaomi my absolutely...
Mi4C currently running 7.2.9 weekly. I'm trying to unlock the bootloader after upgrading to Android 7.0 from 5.1. But all attempts at flashing a downgraded version (libra_images_6.1.7_20151221.0000.11_5.1_cn and 7.5.3.0.LXKCNDE, which are both recommended by wolkenjaeger's guide) fails after 14...