I have done so much research on this topic and nobody has seem to run into this.I am an embedded engineer and have a bit android dev experience, here is what i think based on what i have done and what i have read:1, the NV items are stored in some location in flash memory, and they are loaded in the boot sequence when the phone boots up. Basically the diag mode is not communicating correctly anymore.2, factory reset, no good.3, recovery flashing, no good4, fastboot flashing, no good5, EDL/MiFlash tool flashing, (YES, with an authorized account), including persist partition (modified crclist.txt and etc), NO GOODI am here right now.

Hey guys,I was trying to unlock LTE bands on EEA mi 9t (BAD DECISION, DON'T DO IT!) following any of those tutorials and i broke:1, mobile network2, wifi3, diag mode/portWhat i did:- I have root with Magisk, used 'adb shell / su / setprop diag,adb' to enable diag port.- Connected QPST and QXDM- In QXDM's NV browers, i put '17592185995263' in both lines in NV item 06828 LTE_BC_CONFIG without backing up the original value (BAD DECISION, DON'T DO IT!)- Rebooted the phone, and now mobile network and wifi disconnectes every 5 seconds.What i have tried to fix this:1, Reconnect QPST and QXDM, now QPST doesn't read phone's ESN number, and QXDM is saying that i can read/write to any NV items.

Qualcomm diagnostic mode qxdm