Hi. I recently had some trouble with ROMs, and had to reflash CF-Root with Odin. Now I don't have any signal anymore. Flashed a new kernel, ROM and new modem, and I still can't connect to a network. I can find available networks, however, just not connect to them. Does anyone know the problem? Possibly a broken EFS? I did create backups of my EFS, both by copying the folder to my SD card and with an app. I think I used kTool as that app, but I am not completely sure. I'm a bit afraid to restore it with kTool, though. It says it is dangerous in red letters.
Just restore it with ktool. You can't get in a worse position I mean you're already up for warranty claim if you don't try
Sent from my maguro using Tapatalk 2
It still isn't working. Maybe I should manually move the EFS folder that I backed up? I also used root explorer to copy it, but root explorer says that / is read only.
Did you reboot? Hit the little R/W button up the top for root explorer to be able to paste it.
On another note can you go to setting>about device>status
Can you see an imei number
Sent from my maguro using Tapatalk 2
Is your IMEI correct .
As you have flashed multiple stuff why not flash the correct stock rom for your location and network .Making sure the modem is the right one .
Have you entered your network connections .
Is your Sim Card faulty .
jje
I never removed my SIM card, it shouldn't be faulty. I do see an IMEI number, but how do I know if it is correct?
Amanoo said:
I never removed my SIM card, it shouldn't be faulty. I do see an IMEI number, but how do I know if it is correct?
Click to expand...
Click to collapse
Its on the box >>> its under the battery might even be on your invoice .
jje
IMEI: ***************, which is the same as on the box
IMEI SV: 01, no idea if this is correct
Your IMEI is correct, but you need remove it from here.
It's personnal information. Lot of people search valid IMEI to repair their wrong one.
Then what could the problem be?
EDIT: Now that I think of it, aroudn this time they would give me my new subscription, maybe my SIM card got invalidated.
You have correct IMEI so you should not try to restore your EFS backup. I think it's not the problem.
You should try to flash your phone with the latest official signed stock ROM available in our country (sammobile.com for firmware download).
Then, check if CSC is correct for your area (dial *#272*yourimei# to do that).
You're ok in regards to your ers check your slim is working in another phone
Sent from my maguro using Tapatalk 2
I have the same problem, i flashed differents roms but nothing, i tried to change kernels, change modems, all wipes, but nothing.....
I think i only have last option....SAT.:banghead:
On monday i'll go to shop and send it.
Enviado desde mi Samsung Galaxy S3.
I have same problem. I upgraded via kies and i was unable to connect to network. I can see my imei, csc, baseband but still have problem.
the only problem i have is i can not see th product code and serial number. I restored NV_data.bak but still no improvement.
I am stuck and out of ideas.
can you see your baseband OP? i had this issue and my imei showed up, along with all other info, but my baseband was unknown, i fixed it by using the EFS pro app and restoring my nv_data with it.
Related
Hello guys, I have read many topics about this and I have a problem. I flashed 4.1.2 stock firmware over that same firmware that was installed ( i deleted some files like all share that i need again) and now I can't connect to network, it says it has registered but in the notifications i have Unable to connect to my carrier.
The phone is factory unlocked and i have backed up my EFS and tryed to restore but nothing. The SIM card is working, i tried in other phone, i also tried downloading and installing the original phone firmware also 4.1.2 from Kies, but nothing.
My IMEI is correct, also my S/N is correct, it is not generic or 000000..
I have also tried the ARIZA patch but nothing. I am having the signal and everything is working but i cannot register to network.
How can i fix this guys, and please, don't say search, believe me I've searched alot.
Some more information:
current rom (originally shipped with phone): I9300XXEMG4
One set your mobile network up manually .
Two flash stock rom with correct modem and csc for your network .
Contact your network .
Return phone to vendor or take it to a service centre .
lsalamun said:
Hello guys, I have read many topics about this and I have a problem. I flashed 4.1.2 stock firmware over that same firmware that was installed ( i deleted some files like all share that i need again) and now I can't connect to network, it says it has registered but in the notifications i have Unable to connect to my carrier.
The phone is factory unlocked and i have backed up my EFS and tryed to restore but nothing. The SIM card is working, i tried in other phone, i also tried downloading and installing the original phone firmware also 4.1.2 from Kies, but nothing.
My IMEI is correct, also my S/N is correct, it is not generic or 000000..
I have also tried the ARIZA patch but nothing. I am having the signal and everything is working but i cannot register to network.
How can i fix this guys, and please, don't say search, believe me I've searched alot.
Some more information:
current rom (originally shipped with phone): I9300XXEMG4
Click to expand...
Click to collapse
Install an EMG4 modem or earlier
JJEgan said:
One set your mobile network up manually .
Two flash stock rom with correct modem and csc for your network .
Contact your network .
Return phone to vendor or take it to a service centre .
Click to expand...
Click to collapse
I tried manually set up network, tried manual APN's, also tried flashing stock rom for my network and generic international firmware, nothing worked.
I'll try flashing EMG4 modem to see if it will work.
Edit: EMG4 modem already installed, so not working.
Edit2: I tried ARIZA patch v06, is it only for 4.3 or does it work on 4.1.2 android, i know that v05 is for 4.1.2 but i can't find link anywhere, does anyone have link to version 05 of ARIZA patch?
Edit3: Tried ARIZA patch v05 and IMEI got 00499... going to get it serviced.
lsalamun said:
I tried manually set up network, tried manual APN's, also tried flashing stock rom for my network and generic international firmware, nothing worked.
I'll try flashing EMG4 modem to see if it will work.
Edit: EMG4 modem already installed, so not working.
Edit2: I tried ARIZA patch v06, is it only for 4.3 or does it work on 4.1.2 android, i know that v05 is for 4.1.2 but i can't find link anywhere, does anyone have link to version 05 of ARIZA patch?
Edit3: Tried ARIZA patch v05 and IMEI got 00499... going to get it serviced.
Click to expand...
Click to collapse
Before sending the phone to service center dont forget to reset the flash counter. else your warranty will be dismissed..
suyash1629 said:
Before sending the phone to service center dont forget to reset the flash counter. else your warranty will be dismissed..
Click to expand...
Click to collapse
I'll take it to local servicer, not to official service, yes i have waranty but it is in another country, and by local servicer it'll cost me around 15$ to fix this and it's better than me going to another country and wait like 2 weeks to get it solved
I had this problem too. Is your SD card slot working?
Both slots (sim and SD card) where broken on my S3.
In the Service Centre they replaced the mainboard. After that all was working again.
Don't forget to reset the counters and flash a original ROM from samsung through Odin.
Good luck.
Sent from my GT-I9300 using xda premium
Ic3y83 said:
I had this problem too. Is your SD card slot working?
Both slots (sim and SD card) where broken on my S3.
In the Service Centre they replaced the mainboard. After that all was working again.
Don't forget to reset the counters and flash a original ROM from samsung through Odin.
Good luck.
Sent from my GT-I9300 using xda premium
Click to expand...
Click to collapse
Yes, everything is working, phone is barely new, guy at the service center got it repaired with some kind of a box called z3x box and it's aproprietary tool that can generate the IMEI with no mather what error it has in efs.
Hi, sorry if this has been answered, but I can't find it.
I recently combined two broken i9300's (one with a bricked motherboard (gets into download mode, product name blank, think it's SDS), the other with a smashed screen) by transferring the motherboard from the smashed one to the other.
It seemed to work fine for a while, but after a week the phone lost signal, showing no service. Rebooting the phone fixed this, however this has now been happening more and more often, and now doesn't have any service even after booting.
Does anyone know what the problem could be, and how to fix it?
Thanks.
EDIT: I managed to restore service again by flashing the stock ROM through Odin (was running stock already), but it lost it again after a few hours.
pnz said:
Hi, sorry if this has been answered, but I can't find it.
I recently combined two broken i9300's (one with a bricked motherboard (gets into download mode, product name blank, think it's SDS), the other with a smashed screen) by transferring the motherboard from the smashed one to the other.
It seemed to work fine for a while, but after a week the phone lost signal, showing no service. Rebooting the phone fixed this, however this has now been happening more and more often, and now doesn't have any service even after booting.
Does anyone know what the problem could be, and how to fix it?
Thanks.
EDIT: I managed to restore service again by flashing the stock ROM through Odin (was running stock already), but it lost it again after a few hours.
Click to expand...
Click to collapse
Check IMEI and serial if corrupted. If it shows your correct IMEI and serial then it's fine. Otherwise you may have an EFS problem.
Report back please.
Benko111 said:
Check IMEI and serial if corrupted. If it shows your correct IMEI and serial then it's fine. Otherwise you may have an EFS problem.
Report back please.
Click to expand...
Click to collapse
IMEI and serial are both fine (non-zero and non-null anyway). IMEI matches the label from the smashed phone. However, it's connected at the moment (just re-flashed the stock ROM again). Will update again the next time it loses service.
EDIT: Just lost service again. Only took about 10 minutes after flashing. IMEI and serial are still fine. I also forgot to mention that the motherboard I'm using is from a New Zealand phone, whereas the casing/screen is from a French phone. Don't know if that makes a difference. I tried flashing a French stock ROM, but that gave me an unknown baseband and null IMEI. Flashing the NZ ROM again fixed that.
EDIT2: And another correction. IMEI and serial showed fine after losing service, but I then rebooted the phone. Still no service, baseband is now unknown, IMEI is null and the serial number is non-zero but different than it was. However, I'm sure if I reflashed the ROM again I'd have service for a few minutes, so it doesn't seem like the EFS is entirely corrupt. I'm scratching my head a bit at this one.
pnz said:
IMEI and serial are both fine (non-zero and non-null anyway). IMEI matches the label from the smashed phone. However, it's connected at the moment (just re-flashed the stock ROM again). Will update again the next time it loses service.
EDIT: Just lost service again. Only took about 10 minutes after flashing. IMEI and serial are still fine. I also forgot to mention that the motherboard I'm using is from a New Zealand phone, whereas the casing/screen is from a French phone. Don't know if that makes a difference. I tried flashing a French stock ROM, but that gave me an unknown baseband and null IMEI. Flashing the NZ ROM again fixed that.
Click to expand...
Click to collapse
Judging from your last two sentences you actally have got an EFS problem. Just to clarify: you get generic IMEI & serial with every other ROM you flashed besides the original NZ stock?
Otherwise it might just be the modem not fitting the ROM, try another (if possible original 3-part stock firmware), but make a Nandroid backup or save your EFS otherwise in case you need it later.
Benko111 said:
Judging from your last two sentences you actally have got an EFS problem. Just to clarify: you get generic IMEI & serial with every other ROM you flashed besides the original NZ stock?
Otherwise it might just be the modem not fitting the ROM, try another (if possible original 3-part stock firmware), but make a Nandroid backup or save your EFS otherwise in case you need it later.
Click to expand...
Click to collapse
Not generic IMEI but null IMEI. Not sure about generic serial, not sure how to tell the difference. And I'm now seeing the same on the NZ stock firmware after a reboot.
Is a Philz Touch EFS backup sufficient? Anything else I should backup as well?
Well, since EFS is broken already it should be sufficient. To be on the safe site you can additionally save the EFS folder with Root Explorer.
If you have a working EFS you would need to save it with an EFS saving tool like 'Samsung Tool' in this forum somewhere.
Then you got to go through the EFS threads for i9300 and hope to be able to fix this.
Benko111 said:
Well, since EFS is broken already it should be sufficient. To be on the safe site you can additionally save the EFS folder with Root Explorer.
If you have a working EFS you would need to save it with an EFS saving tool like 'Samsung Tool' in this forum somewhere.
Then you got to go through the EFS threads for i9300 and hope to be able to fix this.
Click to expand...
Click to collapse
I've already gone through all the EFS threads I could find. Haven't seen anyone with the same problem (sometimes it works, briefly, then it stops). Everyone else with the baseband unknown, IMEI null/null problem seems to have that all the time. Was hoping someone would be able to tell me what's different with mine.
pnz said:
I've already gone through all the EFS threads I could find. Haven't seen anyone with the same problem (sometimes it works, briefly, then it stops). Everyone else with the baseband unknown, IMEI null/null problem seems to have that all the time. Was hoping someone would be able to tell me what's different with mine.
Click to expand...
Click to collapse
How should anybody know from the distance? We can just give hints and point you into directions, now you've got to read & google and if you're
persistent enough you will solve your problem - as long as it's not hardware related.
Another great but a bit chaotic resource:
http://forum.gsmhosting.com/vbb/
Benko111 said:
How should anybody know from the distance? We can just give hints and point you into directions, now you've got to read & google and if you're
persistent enough you will solve your problem - as long as it's not hardware related.
Another great but a bit chaotic resource:
http://forum.gsmhosting.com/vbb/
Click to expand...
Click to collapse
Sorry, just meant that I thought somebody might have seen this exact problem before.
I think I've solved this. Used the repair NV data option (to fix broken baseband) in EFS Professional, and it seems to be working fine. Will see if it's still working after a few days though.
My best guess is that this was a file permissions error.
pnz said:
I think I've solved this. Used the repair NV data option (to fix broken baseband) in EFS Professional, and it seems to be working fine. Will see if it's still working after a few days though.
My best guess is that this was a file permissions error.
Click to expand...
Click to collapse
No, not fixed. Worked fine for a few days then the problem came back. Just tried a non-stock ROM (Omega) and same thing. Trying a CM-based ROM now (ParanoidAndroid), but not too hopeful.
Still don't understand why it works for hours/days, then suddenly stops. Rebooting it fixes it the first few times, then that stops working as well (and I get baseband unknown at this point). Flashing a new ROM always fixes it, for a few hours/days anyway.
Sounds like a hardware issue, possibly nand memory becoming corrupt hence why it works for a while on a fresh install.
Sent from my GT-I9300 using Tapatalk
boomboomer said:
Sounds like a hardware issue, possibly nand memory becoming corrupt hence why it works for a while on a fresh install.
Sent from my GT-I9300 using Tapatalk
Click to expand...
Click to collapse
Any workarounds you can suggest? Just had the problem happen again on cyanogenmod, so that didn't fix it.
Try reading the freezing thread in general forum, see if the memory test tool will compete after a full wipe and fresh install of a stock firmware.
Other than that only a new motherboard, as the emmc chip is damaged.
Hi guys,
I recently bought an s3 that the previous owner had messed up (stuck at samsung logo), so I thought okay this is just gonna be a simple reflash. It's a i9300, I have no idea what carrier it comes from. - I live in South Africa and its most likely vodacom/vodaphone.
Anyway, I install the ultimaROM (cwm was still working) and I couldn't connect to anything when it booted - wifi, bluetooth, and cellular network. So I checked and I had no IMEI number and my baseband version was unknown, and from there I tried to backup and the restore the corrupted efs folder, which didn't work. (At this point I thought this was a stolen phone.)
After this I found the stock rom on sammobile and flashed it, and this enabled the cellular network which is working perfectly, but the wifi and bluetooth still doesn't work - tried on various kernels and roms. Currently I'm back at ultimaROM, it has a really nice feel.
I should explain that when i move the wifi switch to on (in settings) it stays there for a second or two then goes back to the left - it doesn't switch on.
I'd appreciate any guidance, if possible. My S5 was recently stolen and unfortunately I had no insurance on the phone:crying:
Do a full wipe, preload and internal sd card then reflash the latest stock firmware. Factory reset after in recovery.
If still the same then check if Mac address is valid, efs problems can corrupt it.
After that is it probably hardware.
boomboomer / OP:
Please read my postings on how an incorrect CSC can also cause an invalid IMEI. This is likely more often the cause over a corrupt EFS.
http://forum.xda-developers.com/galaxy-s3/help/suggestions-s3-faq-t2902962
pfmdan said:
boomboomer / OP:
Please read my postings on how an incorrect CSC can also cause an invalid IMEI. This is likely more often the cause over a corrupt EFS.
http://forum.xda-developers.com/galaxy-s3/help/suggestions-s3-faq-t2902962
Click to expand...
Click to collapse
It's more likely that the csc change app happened to fix your nv.data file as it edited it -as the csc is mostly irrelevant to the phone's normal operation.
Your instance is the only one to try linking csc to efs problems, so no it isn't the most likely cause.
I'm glad you fixed your phone, but I think it was pure luck it coincided with the csc change. Besides, this op fixed his imei by flashing stock, probably due to efs v2 being unreadable to an earlier firmware.
Hi Boomboomer
I'm not trying link the CSC to EFS probs. From my experience it seems that if you have an incorrect CSC for your SIM/telco, you can end up with an invalid IMEI/serial and hence unable to access your network.
The standard response on here whenever someone has a 0049* IMEI or zeroed serial is "It's an EFS prob" and they never mention it coud be an incorrect CSC, as it was in my case. Sometimes it will be an EFS prob, I appreciate that.
I didn't fix my phone by using the CSC changer app so I'm not actually sure that would work but it should because I fixed my phone by flashing a ROM with a different CSC. That was the only difference between it and the same ROM with a different CSC that gave me an incorrect IMEI and serial.
As well as the S3 FAQ, this guide should be updated to note that an incorrect CSC can cause incorrect IMEI/serial and hence no network.
http://forum.xda-developers.com/galaxy-s3/general/ref-imei-efs-stuff-i9300-including-t2393289
I have added a comment to that thread with my suggestions but I've not had any reply yet.
boomboomer said:
Do a full wipe, preload and internal sd card then reflash the latest stock firmware. Factory reset after in recovery.
If still the same then check if Mac address is valid, efs problems can corrupt it.
After that is it probably hardware.
Click to expand...
Click to collapse
Okay, I've done all of that and my Mac address is valid. My cellular network still works perfectly fine, but the wifi/bluetooth problem still remains. I think I'm going to work with the fact that its a hardware problem and take the phone apart.
I'll check for any damage especially near the wifi/bluetooth module and antenna and work from there. The LCD has some hectic "streaks" causing me to presume its generic so maybe it's a dodgy install.
pfmdan said:
boomboomer / OP:
Please read my postings on how an incorrect CSC can also cause an invalid IMEI. This is likely more often the cause over a corrupt EFS.
http://forum.xda-developers.com/galaxy-s3/help/suggestions-s3-faq-t2902962
Click to expand...
Click to collapse
I checked my CSC - it's right for my location(South Africa - XFA), so that seems to be in order. Thanks for the help though :highfive:
I wasn't suggesting changing CSC would fix any wifi or BT issues but it could've fixed your cellular connection if its not a hardware issue.
Hello,
I have a big issue with my i9300. I flashed PDA: I9300UBUGNK1 Brasil version and I decided to root it using CF-Auto-Root-m0-m0xx-gti9300 .
After root the phone was perfectly working, but I uninstalled some pre-installed games which come with that Brasil version from sammobile and after I woke up after several hours I've noticed that there is no signal. In settings > phone info it says BASEBAND VERSION : unknown and IMEI : null.
I tried to flash again, I've flashed different version, nothing can help. The phone is fully functional WIFI works, only no signal, null imei and unknown baseband version. What the heck I can do before smashing it with a hammer?
And I'm talking about home fixes, as I don't have jig & other professional tools
There is no home fix for imei problems, unless you have an efs backup to restore. Take it to a repair centre and pay them to recode it for you, make sure it works on 4.3 before you accept it back.
boomboomer said:
There is no home fix for imei problems, unless you have an efs backup to restore. Take it to a repair centre and pay them to recode it for you, make sure it works on 4.3 before you accept it back.
Click to expand...
Click to collapse
As long as the phone is not bricked there should be a home fix... Hopefully
Nobody??
Managed to make it working using an efs backup from a different phone. Now I have to figure out how to put my correct imei instead of that one
Imei now shows 0049
This thread should be closed, indeed a very friendly and helpful community over here ....
A mod, please close this thread
Stop whining, you got the right answer the same day you asked.
Cloning your phone by using the efs backup from another phone is illegal and won't fix the problem anyway.
boomboomer said:
Stop whining, you got the right answer the same day you asked.
Cloning your phone by using the efs backup from another phone is illegal and won't fix the problem anyway.
Click to expand...
Click to collapse
I didn't wanted to clone another phone and hijack it, please let's remain serious. I just wanted to fix ny efs and that's why I used a backup made from a phone which was broken and was sold by parts.
Now everything was fixed at service
Just a question about k-tool backup
After doing a backup with it I have 2 files
efs.img - 20mb and
efs.tar.gz which has 0 bytes and appear to be damaged as I cannot open it.
Is that efs.img enough in case I lose my imei again after a flash or what?
Hello guys, I had this same problem 2 days ago after flashing the GlamourS4 ROM onto my friend's S3. The flashing failed as it was flashing the modem with an "Assert failed" error, however it still reported that the flashing was successful. On booting the phone it had a null/null IMEI and the baseband was also unknown. I even posted about it on xda.. Yesterday, I found a way to fix both the nul/null IMEI and the unknown baseband. I figured that if I flashed modems onto the phone that the baseband "unknown" message would be fixed, and in the process also fix the IMEI. I therefore searched for patched kernels and modems for it. I came across this page that had patched modems and kernels for the S3 running Android 4.3. I flashed the modems and kernels found on the page with CWM 6.0.4.7 one by one. I went through 6 zipped files before the seventh one fixed my IMEI null/null and baseband "unknown" errors. The one that fixed it was "Patched_XXEMC2_Modem.zip". The six I tried at first changed the IMEI from null to 0049XXXXXXXXXXXXX/XX. The seventh one fixed both problems well. IMEI is well now and the baseband is too. Try flashing the kernels and your phone shall be OK like mine.
Null or 0044....... imei, only repair on service with box and tools... In Serbia, cost 10 euro. Good luck
Sent from my GT-I9300 using XDA Free mobile app
Decided to update my GT-i9300 today.
These are the steps I took before I flashed new rom.
Format and factory reset
Wipe cache
Davlik cleaned
Flash new rom
Reboot
I have tried Lollipop 5.0, 5.1 and KitKat all with the same results. Phone keeps losing network connection (Three), I have tried suggestions like airplane mode, delete and reinsert APN detail,remove sim card, switch off phone. I have also reflashed all 3 ROMs twice and still exactly the same error.
Install my backup (Original) Rom and all works fine.
I have the latest CWM too.
Can any help and advise please?
No one willing to help?
I have googled and searched this forum and that is where I found the suggestions that I have tried.
Is your imei and your phone's serial number original?
You can find it in Settings-about device-status
It seems correct to me.
I purchased phone in used condition with broken screen from a work colleague two years ago (no longer works here). I repaired screen but replacement did not have sticker under battery, I stupidly did not remove original sticker or keep a record (stupid I know). Well about two weeks ago I tried to flash a new rom but bricked phone, would not turn on whatsoever. Sent phone off to get repaired (Ebay) but because there was no IMEI number and I did not have box or the original sticker the guy would not repair (which I understand), I located my IMEI number from Google Dashboard and then got a Checkmend Certificate to prove that the phone was legit.
Since it's return I have had this problem. He has flashed an image on which seems to work but no other image that I try will work.
IMEI number is correct as far as I am aware but I am not sure how to confirm the Serial number is correct, any advice?
Just been to an IMEI checking website, inserted my IMEI number and listed serial number on phone and all details came back correct.
Your efs is corrupted and will no longer work with firmware that requires v2 efs.
Only solution, which is what your repair guy did, is to flash the patched modem and kernel -which enables the efs to be read again.
Each time you flash a firmware you will need to then flash patched modem and kernel before you can get connection.
boomboomer said:
Your efs is corrupted and will no longer work with firmware that requires v2 efs.
Only solution, which is what your repair guy did, is to flash the patched modem and kernel -which enables the efs to be read again.
Each time you flash a firmware you will need to then flash patched modem and kernel before you can get connection.
Click to expand...
Click to collapse
Thanks for your reply. Decided to try one last time. Flashed CM 12.1 and it seems to have worked except for one thing, my serial number is not the same as before. IMEI is fine.