Thanks for prompt reply and your support . Long Live https://xiaomi.eu/Thank you mate. Yes, we use the same App vault as China, but we use our own server for the shortcuts and widgets, so we have full control over that content now.
Can't comment on if what you're seeing as a bug, but screen brightness, I think this is a general issue with Xiaomi phones. To correct the issue as I was rooting anyway, I installed this, which works on my Mi Mix 4 and also worked on my Mi 10 UltraHey guys,after a moment of laziness, I upgraded to the latest weekly (was still on September A11) all went flawless, battery has dramatically improved, but there is a slight obstacle I noticed, the screen brightness in sunlight is absolutely worse, I can barely read anything, so I wonder if it's a Bug or just not yet fully implemented, seems like the boost isn't there at all.
Sent from my Mi 11 Ultra.
If I'm correct, the EFS partition is a Non-Volatile partition. If your phone's NV Data is corrupted, the EFS partition is corrupted. EFS Contains data and parameters of the Radio, Wi-Fi MAC Address, Bluetooth MAC Address, IMEI, MEID, and other chip-level configuration provided by the OEM and the Chipmaker. The EFS is unique to every device because of the data and parameters it holds. So if this partition is corrupted, your IMEI will disappear and now you can't call, text, or access the internet, you can't use WiFi and Bluetooth anymore. The chances of getting your EFS back is very little. This is why backing up your EFS partition (same goes for the Persist partition) is important and should be the first step before modifying your device. Some devices regenerates the EFS Partition by collecting information on the FSG, Persist, Modem, and BTFM partitions but unfortunately, is rare. I hope you didn't wiped/erased the persist and EFS.getting a boot loop on poco f3, says NV data is corrupted