How To Avoid Contact Service In New Nokia Phone

hi
in old nokia phone u get contact service when u downgrade phone version as security file damaged
rpl etc

but in recent time u get contact service after flashing lower or higher version
but not the version is the problem but manfucturer
 

after nokia fall in buisness microsft bought it
and issued new nokia such as nokia 105
on phone cover nokia name and nokia logo on sofware
but on sticker microsoft
after 2016 nokia bought buy HMD global

u will read HMD global on phone sticker under battery
so if flash Nokia by Microsoft with hmd global version u will get contact service
and vice virsa

ok first before u flash phone do this
open Best
go mtk section
service tab
tick rpl only and press flash then connect phone

now from log u can check version 

just flash phone with same version in log

but if u got phone with contcat service issue
do same method
read flash with rpl only ticked

if in log
Control Block Validation (Security Test) :
CBR is Ok, match with BB SN. Phone Security is Alive
Mobile Info
just flash phone with same version in log or with lower if phone by microsoft
or higher if by HMD global
but if u get this in log after reading rpl

CBR Info is wrong! CBR SN not match with BB SN!
Say thanks to some "great chinese tools" for kill your phone
If backup not done - phone just a brick