Hi. I am having troubles updating ROM on my Xiaomi Mi 10 Ultra. I have successfuly installed v21.11.3 couple weeks ago, and now I wanted to update to the latest Weekly one. When I connect my phone to PC (in fastboot) and run the update script, it is just blank cmd screen and nothing is happening. I have checked that I have developer options and USB debugging enabled.
When i run the adb devices command it does not show my phone in the device list. However if I run adb devices when my phone is turned normaly on, it shows up and I can even use adb to reboot to fastboot.
Any idea where the problem might be? Or am I doing something wrong? Using the same PC as I used to install fresh, so all the drivers are installed.
Thank you very much in advance.