Looks like many got expired hardware at same timeframe

Really can't believe this, my 7 year old M7 is still running even with half dead battery and slow response due to obsolete android version. I expected U11 to have better hardware and durability

My U11 battery is still running, though not as strong as brand new (of course). I just need to recharge once at around 4PM for normal use. But now it's a potato.
Do you mind sharing the steps you did to restore IMEI and Baseband please?
Also can show me where to find a backup of U11 QCN file?
Thanks in advance!