SIM Not Recognised After Installing Unofficial CM12.1 - Galaxy S III Q&A, Help & Troubleshooting

Hey guys, I have no idea why but ever since I installed an unofficial CM 12.1 ROM no SIM is recognised on my device. I've tried using different SIMs that have worked in other devices, etc but nothing has worked. I've now updated to a CM13 nightly and it still hasn't been fixed. Does anyone have an idea what's up with it and how I might be able to fix it?
ROM name: CM13
ROM version: 13.0-20160120-NIGHTLY-i9300
kernel version: 3.0.1.101-CM-gdaa49a6
A pretty much fresh install without any kind of mods aside from GAPPS and TWRP recovery.
I want to say it's a clean install, but I can't remember 100%, the install that broke it completely was a dirty install I think, but it has since been reset to factory settings several times.

Same problem here. ?

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flash Modem DDEMG2.zip to get your imei. Then flash Patched_XXUGMK6_modem.zip to get mobile signal
Modem DDEMG2.zip - http://d-h.st/2mC6
Patched_XXUGMK6_modem.zip - http://d-h.st/j3h

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[Q] [Help, Q] Efs corruption when Rebooted in custom Rom

Hi, When ever i hard reboot my phone my efs gets corrupted, but for soft reboot it is good. In stock rom no such problem, but i tried many custom roms, it happens. Initially when the rom is installed it dosen't happen. After a few days, after installing a few apps it happens. I am not finding any help in this matter, please help.
Also can i change csc to inu (india) in custom rom, I have installed latest modem for my country (india). But my signal keeps fluctuating. I am using Slimkat 5.9 weekly 4982.
Thanks a lot.

CM Nightly-12.1

Ok, i will make it short as possible.
Downloaded CM 12.1 UNOFFICIAL and after im flashing it i have no baseband/IMEI so luckly i did a backup so i flashed the backup
my phone bricked so i sent him into the tech lab. fixed it and no im with 4.0.4 baseband: I9300BULE6
before my phone bricked cuz i tryed to flash stock i had the cm with this baseband(ive flashed it with twrp) : I9300JKEMC1 OR either this one im not sure: I9300JKELK4 but it showed me Hot Mobile-No Signal (im in israel) so it recognized but i had no signal.. now im with the stock with supersu and twrp 3.0.0.2 and i would love to be with CM so what i need to do ?
the twrp that i used cm-12.1-20150406-UNOFFICIAL-i9300

[HELP] No IMEI, No WiFi, Unknown baseband

I flashed Xperience Rom on my OPX after taking a full TWRP backing and wiping /data and /system after that.
After that I have No IMEI, so no SIM ; No WiFi connectivity and unknown baseband as shown in screenshot.
I have already tried,
- Full reset
- Flashing OOS 3.1.4.
- Flashing OOS 2.2.2.
- Restoring backup.
Nothing is helping. What should I do?
Try flashing new baseband from here:
https://forum.xda-developers.com/oneplus-x/general/zip-recovery-flashable-firmware-radio-t3381420
If it won't help, maybe this will help:
https://forum.xda-developers.com/oneplus-x/general/guide-mega-unbrick-guide-hard-bricked-t3272108
Caraparbor said:
Try flashing new baseband from here:
https://forum.xda-developers.com/oneplus-x/general/zip-recovery-flashable-firmware-radio-t3381420
If it won't help, maybe this will help:
https://forum.xda-developers.com/oneplus-x/general/guide-mega-unbrick-guide-hard-bricked-t3272108
Click to expand...
Click to collapse
Tried them all, nothing is happening. I locked my bootloader by flashing that baseband; qualcomm tools saved me.
Thanks anyways
How did you fix this? I think I have the same problem.

Doogee DG310 connecting but no service after ROM flash

Hi guys and thanks in advance for the advice.
I'm new to the forum and new to flashing roms
My mobile :- DOOGEE VOYAGER2 DG310
Flash Tool :- SP flash tool MT6582
Kernel :- 3.4.5
I tried to install TWRP with SP flash tool by just flashing the RECOVERY
which didn't go well, so found the stock rom and re flashed only the RECOVERY
now booting again
(solved this part) I needed to correct Kernel version of TWRP mine is 3.4.5 needed 3.4.67 kernel
the 3.10.54+ kernel version did not work just hung when trying to load recovery.
Anyway my system backup I made with TWRP recovered OK but still no service ?
-------------------------------------------------------
The problem i've got with my phone
I flashed Doogee Voyage2 DG310 Android 5.0 using SP_Flash_Tool
all working apart from connected to O2 mobile.o2.co.uk 3G all services grayed out.
getting mobile network not available
Tried all the help on google for mobile network not available still the same.
So flashed back to Stock ROM Android 4.4.2
still the same.
thought must be my SIM Card but working on my old phone so formatted
[whole flash except Bootloader]
then re-flashed :-
STOCK 4.4.2 / STOCK 5.0 / Resurrection Remix / Lineage Os R79 rom
all with the same result, Connected to O2 3G all services grayed out.
also tried both SIM slots same.
There's something I'm missing here ?
Is there a way to reinstall/flash the mobile service providers GSM files ?
don't get it if I clear the phone then re-flash surly I would get all I need ?

Sim detected but no signal no data after reboot in custom roms

Hi all,
I own a redmi 5 plus china version, unlocked.
If i flash a custom 8.1 rom (lineaje, aex, dotOs...) everithing is ok until i reboot the phone. After rebooting sim is still detected but there is no signal nor data.
I've tried RWRP, TWRP, treble, non treble... and always the same result.
Do you know what can i do?
Thanks a lot
I have the same problem, did you manage to solve it?
Did you try flashing the latest firmware for our device?

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