İmei is gone when update to pie mıui 10 ! PLS HELP

[Feardarks]

Hi guys. İ have Redmi 6 pro 64gb china. i bought from other country bcz on my country price is sooo high. i tryed to fix imei by myself and it worked i got imei , 4g, call services etc etc. and i realise my version is miui 10.2.2.0 STABLE OREO EU. so i wanted to upgrade latest miui 10.5 pie beta EU. i downloaded and installed just as normal. and phone is just started to rebooting to twrp... i figured out to boot. and my imei was GONE ! PLS HELP