Had my phone unlocked earlier, but just now upgraded to Android 7.0 with Xiaomi stable rom. I tried to unlock with an older unlock tool which stops at 50% and tells me I need to upgrade the tool. Upgraded the unlocker tool, but now it tells me my phone is not connected (and unlock button is greyed out). With Fastboot I "see" the phone. Any help with (re)unlocking this phone would be welcome.