REDMI NOTE 9 lost IMEI but it is there - Redmi Note 9 Questions & Answers

I did a factory reset for the phone from settings, when it booted the sim wasn't recognized
checked *#06# and it looked like this
I tried so many tools to restore a lost imei but I found out by (read info) in one of them that the imei is still existed
locked bootloader, official firmware, don't have an nvram backup
DO I have to unlock the bootloader to flash a custom rom and restore the imei
and if so, is there a way to unlock the bootloader without having a sim in it?
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Related

SGS Locked again after Froyo!

I recently upgraded to JPA (from JM8) using Kies.
When i bought the phone i used the "SGS Unlock Tool" to get the unlock codes. They worked fine. But i still used the SIM card from the carrier where i bought the phone.
Now i tried to use a SIM card from other carrier, and SGS is asking for the unlock code again!
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And the code i have doesnt work! How can this be possible? This should be a unique code based on the IMEI, right? The IMEI is the same, why it doesnt work??

[Q] So my brother messed up, sim not working.

TESTING!
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It would have been easy top read the faqs and guides and return the phone to a warranty state .
Wipe phone in recovery flash stock rom for your region/ network from sammmobile.com
Check IMEI is correct if not as you will have failed to backup EFS then a paid for service repair is next .
12 year olds are well capable of rooting its all a question of reading the faqs and guides .

[solved]Relocking Bootloader

hi
i followed this tutorial rooted and backed up my drm keys using tabackup
now when i want to restore them it shows this error
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i extracted the img file from the zip tabackup generated and tried this and flashed a stock firmware but when i check through service menu it says
Rootint status:
bootloader unlocked : yes
Click to expand...
Click to collapse
shouldnt it say bootloader unlock allowed : yes ?
======================================
tried this

I can't seem to be able to relock my bootloader

I'm getting the error device already locked even though my bootloader clearly states that the bootloader is in unlocked. I just flashed the factory image for the phone and still same error. Any ideas?
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have you locked the standard bootloader also?
Fastboot flashing lock

your phone couldn't start normally

Hi,
i had an old update on the phone (stock rom), when i tried to update it normally it was going to boot loop. so i flashed the latest stock version using odin. it worked fine for two months then it started random restart until finally it went to unbootable status.
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I have tried to re-flash the latest firmware but no effect. the FRP and OEM is locked. so what are my chances, i want at least to take a backup.
phone model N960F (XSG)
regards

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