I just installed the latest release of xiaomi.eu HyperOS 3 to my Poco M8 Pro 5G. However, I now get no service at all. I know the SIM-card is good, because it works on other phones. I know the phone is good, because before I unlocked the bootloader, I used it on the stock ROM and it worked just fine. Does anyone have any idea what I'm doing wrong, or what the bug might be? The phone is pretty much useless this way, which is a real shame.