[H910] Flashed LineageOS 14.1, later SuperV20 and then stock v10q; modem not working

[Lebensfreude]

Hello everyone,

I flashed LineageOS 14.1 in July on a H910 v10m and had random kernel panics. I later tried to fix this by dirty flashing SuperV20 (different kernel), which didn't boot. Later I flashed stock v10q from .zip in TWRP. Now the phone is booting again, but the modem isn't working. Apparently the modem files are device specific according to what I read. I have a plan to fix this, but also a couple of questions regarding some points.

1. Flash the H915.kdz again in modded LGUP

• Do DirtySanta again up to step 3

• In TWRP flash the v10r files, at this step I guess, I also have to flash my device specifc modem. I backed up everything with LGUP beforehand. I guess, I have to flash modem_COM4 to the modem partition. What about the modemst_COM4 files? How do I apply them?

• Test if it boots again with modem.

• If it does, I'd try to flash a custom ROM again. I would prefer LineageOS but these kernel panics were really bad. Can I fix this with AnyKernel?

Please point me in the right direction with this, I don't want to f*ck it up again.

 

[runningnak3d]

In TWRP flash the v10r files, at this step I guess, I also have to flash my device specifc modem. I backed up everything with LGUP beforehand. I guess, I have to flash modem_COM4 to the modem partition. What about the modemst_COM4 files? How do I apply them?

You need to flash modemst1 and 2 to modemst1 and 2. You also need to flash fsc and fsg to their respective partitions. The issue is that your EFS got corrupted.

-- Brian

 

[Lebensfreude]

You need to flash modemst1 and 2 to modemst1 and 2. You also need to flash fsc and fsg to their respective partitions. The issue is that your EFS got corrupted.

-- Brian

Hello Brian,

I've restored EFS from a recovery I made in TWRP. I'm on stock v10m now and have signal but not mobile data for some reason. Do you have an idea why?

 

[runningnak3d]

Did you check your APN?

-- Brian

 

[Lebensfreude]

Did you check your APN?

-- Brian

I did, couldn't find any APNs. Had to write my provider a SMS and received the APN information! Thanks mate, you helped save my cell phone!