this link seems helpful, if untrustworthy: https://romprovider.com/xiaomi-qin2-pro-unlock-bootloader/ it contains a google drive link to android_device_unlock.rar
the original post seems helpful, but most of the primary material seems to be in russian, a language i have not myself learned yet. my browser isn't showing the automatic "translate" popup and i failed to find the search button on the russian site. the dev of the open source OS i got working with the unihertz titan uses a qin 2 pro: https://github.com/phhusson/treble_experimentations/issues/1602#issuecomment-735017739 hovatek has a lot of unisoc information. they link to a fastboot for unlocking that is on mega.nz: https://www.hovatek.com/forum/thread-32287.html the mega.nz link just loads a lot of ads for me. it's great to find a more normative set of information for this phone chipset.
