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no sim card/ no service
#1
Hi,
first post here, PAC is awesome and i want it badly but i have this issue with signal/ sim card.

I flashed pac_i9300-4.3-20140128 on my SG3 like a million times already trying to come from a 4.3 foxhound rom (tw based), omega v58 (tw), various stock firmware like xxugmk7, but nothing works most of the times i get no sim card message after boot or i simply have no service and the baseband is marked "unknown" in settings. i tried flashing modems and restoring efs from working backups, same result every time.

Im at this for days now Please Help.

Thanks.
 
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#2
(04-22-2014, 02:31 PM) samuelaviv Wrote: Hi,
first post here, PAC is awesome and i want it badly but i have this issue with signal/ sim card.

I flashed pac_i9300-4.3-20140128 on my SG3 like a million times already trying to come from a 4.3 foxhound rom (tw based), omega v58 (tw), various stock firmware like xxugmk7, but nothing works most of the times i get no sim card message after boot or i simply have no service and the baseband is marked "unknown" in settings. i tried flashing modems and restoring efs from working backups, same result every time.

Im at this for days now Please Help.

Thanks.

Okay so i solved the issue and ill share my experience so maybe someone will find it helpful.

So the issue is not directly related to pac-man rom but more to do with the famous efs folder conundrum though im not a developer so i cant say exactly what was the issue or even be a 100% sure it was the efs folder. 

so I got me a used malfunctioning i9300 which i then repaired at a lab and proceeded to install a new TW based rom my first mistake was not backing up efs folder and creating a nandroid, but i havnt realized that yet. i noticed that i have no gps and i didnt know if the gps was working with original firmware or not because i neglected to check that or back it up, i decided to put a pin in it for the time being and went on to check out some roms. 

At first, i flashed couple of JB tw based roms all was well (except for the gps), then i started to check out some KK roms, those didnt play well with my device, I go tno service in every single rom i tried, You name it ive tried it, none fixed the service issue. Moreover i also tried a few JB AOSP based rom among them the 4.3 jb pac-man rom, those had the same no service/no sim issues, Meanwhile whenever i un-root and flash with odin back to stock or restore a nandroid i made while on 4.3 foxhound rom (with service working and a supposedly good copy of the efs folder) service is restored. I would also mention that I had more backups of the efs from the working "foxhound" i made with different tools and when i restored these folders when on a rom with no service it didnt fix the issue. 

Here are the solutions ive encountered and tried that didnt work:

-restoring efs with efs pro, samsung tool, efs backup -restore cmd tool.
-flashing latest firmware and flashing back to kk
-flashing all kinds of modems (those pre efs folder change (xxemg4) and those after)
-flashing latest twrp/cwm recovery
-flashing kernels
-trying to edit "nv_data.bin" with hex editor
-some more ways in trying to manipulate the efs folder.
-using samsung service codes on stock  which i found regarding this issue - except from the *#06# for imei pretty much none worked for me

Its important to mention that when on firmware or a JB TW based rom i would see my baseband version in settings and when I tried the *#06# code for checking my imei it gave me a serial number with many digits that I assumed was indeed my correct IMEI number, and when i was on kk roms or non tw JB roms i would get the same popup with no numbers and in settings i would see "unknown baseband" . 

To add to that, whenever i rooted and installed a kk rom or a jb non tw rom and tried to restore efs with efs professional i would get a message the device is not perm rooted. 

This research took me about 5-6 days and the end of which i was ready to give up on having a KK rom or a non TW rom for that matter, I just had some fight in me for one more hopeless attempt. I read somewhere that a flashing of cm 10.1 and then going to settings -> more and ther change some network stuff from this to that would help -

(Originally Posted by Goose306 on s3forums.com) 

"flash back to another AOSP 4.2 ROM (CM10.1, Liquid, etc.)
Got to Network settings. You need to change Roaming to automatic and CDMA settings to RUIM/SIM (I *think* that is the name of it, I'm actually on TW temporarily as I'm troubleshooting some SDcard issues of my own)
Reboot and you should be back in business. Touchwiz doesn't have a way of changing of those settings which is why ODIN/stock doesn't fix it"

 I said what the heck thats simple enough. I flashed CM 10.1.3 for i9300 and went into the settings but the options i read about werent the same so i did move one settings around in the more section, cant remember what it was but it was nothing i knew about anyway, then went on to recovery to flash carbon rom 4.4 and to my enormous surprise i had service and connection and to my astonishment i also got back the GPS as a bonus ! yay ! I bet you forgot about that too by now... 

This ends on a weird note though, though everything is at working order now and the IMEI number i get is the same as the one i get when on stock rom it does not match the number on the back of the phone under the battary.

Hope this helps someone.
 
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