Question Help would be greatly appreciated. - OnePlus Nord N20 5G

I got the cph2459 model to explicitly avoid T-Mobile's lock however I am now in my second bootloop, and finding CPH2459 is a needle in a haystack where GN2200 is all over the place. ;/ I went to OnePlus customer support and they said ill hear back from them within 24 hours, but i luckily broke my backup device two days prior and am locked out of 2FA on most of my accounts. I tried flashing older firmware , and it at first refused to allow any critical partitions to flash killing my ability to use networking, and it then proceeded to bootloop for two or so days now, and at this point my main concern is my attempts at fixing this push the issue beyond recovery.

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Still searching for a full image of cph2459

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I used fastboot enhanced https://forum.xda-developers.com/t/...enhance-payload-dumper-image-flasher.4310553/
To flash to a lower stock using a OTA payload.bin I would be happy to upload that as well however I messed up my IMEI and the IMEI fix using diag mode has not fixed that issue as of yet
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Once on a lower firmware I let it normally update to the c.10 update and flashed N20 5G [CPH2459] - Unlock/Root/Safetynet (Step-by-Step)
These img to get root and made a full backup I'd be happy to share at no cost.

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I have tried correcting my IMEI with two tools now with no luck ive tried reflashing my nhlos core's modem's and I may have to go directly to OnePlus as I switched to the unlocked CPH2459 and returned my GN2200.
ScarletWizard said:
Just saw this
Theres a person gsmafia that has 3 cph firmware password zipped and wants $$
There's an other person. He pretty busy response when he can.
I will pm you the info. I can't post it here.
The pesky badgers will send me warning if I do.
Click to expand...
Click to collapse

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I flashed modem backups now trying to flash modemst1 & st2 along with fsg, fsc, and a few other partitions linked to the efs like the efs, efs1, efs2, and efs3 partitions im making a flash script for those partitions and hoping to avoid getting a box to fix. It will be substantially easier once TWRP is completely operational. I will look later today at where it is, and if it needs anything I can contribute to it I will try to add it on, and I also will post my full CPH2459 partitions once EFS is operational so I dont submit partitions that may just give someone else this issue if I cant fix my IMEI ill use a box (NOTE: if you attempt the same it is illegal to change your IMEI in anyway other than restoring the exact IMEI related specifically to your device my posts regarding methods I use to repair my own is EXPLICITLY advice on fixing any baseband or IMEI corruption and not meant to be used for illegal purposes.) I will keep posting any progress in fixing my IMEI and baseband issues and what I had to do to restore my IMEI to its original value from the back of the box.

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From my reading into other QUALCOMM and snapdragon issues that mimic my issue it seems the QCN becomes either corrupt, or deleted and has to be fixed, or your EFS or Persist data is deleted, or corrupted and flashing firmware can on rare occasions lead to this issue, and I am going to try various fixes and report back what works in the event anyone else needs to REPAIR an IMEI issue (AGAIN imei changes other then fixing a device to it's actual original imei is in most regions a crime and this information going forward is in no way nor should in anyway be used as advice changing your imei from it's original imei located on the back of the box you received the device in.
micheal2445 said:
I flashed modem backups now trying to flash modemst1 & st2 along with fsg, fsc, and a few other partitions linked to the efs like the efs, efs1, efs2, and efs3 partitions im making a flash script for those partitions and hoping to avoid getting a box to fix. It will be substantially easier once TWRP is completely operational. I will look later today at where it is, and if it needs anything I can contribute to it I will try to add it on, and I also will post my full CPH2459 partitions once EFS is operational so I dont submit partitions that may just give someone else this issue if I cant fix my IMEI ill use a box (NOTE: if you attempt the same it is illegal to change your IMEI in anyway other than restoring the exact IMEI related specifically to your device my posts regarding methods I use to repair my own is EXPLICITLY advice on fixing any baseband or IMEI corruption and not meant to be used for illegal purposes.) I will keep posting any progress in fixing my IMEI and baseband issues and what I had to do to restore my IMEI to its original value from the back of the box.
Click to expand...
Click to collapse

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MTK devices are far easier in regards to repairing the issue so what luck we have a Qualcomm device -_-

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I used a box, but that information will be really helpful moving forward lol. GSM SHIELD.