I9100g imei repair - Galaxy S II Q&A, Help & Troubleshooting

Hello,
i have a problem with my I9100G. It has the known IMEI 004999010640000. I want to repair the IMEI back to the original one.
Who can help me with that via teamviewer. The phone also always ask for a network unlock code when the pin of the simcard is entered.
The phone is/was a free one which acceped all cards. But now after the crash it do not accept any card without asking for a network unlock code.
If someone can help me it would be great.
I can also make a payment via paypal if someone help me with success.

bladethesoldier said:
Hello,
i have a problem with my I9100G. It has the known IMEI 004999010640000. I want to repair the IMEI back to the original one.
Who can help me with that via teamviewer. The phone also always ask for a network unlock code when the pin of the simcard is entered.
The phone is/was a free one which acceped all cards. But now after the crash it do not accept any card without asking for a network unlock code.
If someone can help me it would be great.
I can also make a payment via paypal if someone help me with success.
Click to expand...
Click to collapse
First of all, never ever give an IMEI over the Internet, especially your true one. It is enough to mention that your IMEI has been modified. IMEIs can be stolen and in some countries there is a blacklist of them and you risk getting fined or, in some instances, prison.
Now, what ROM are you on? Usually IMEI corruption takes place when you flash custom ROMs. What you should try is flash a stock ROM on your phone. I know my brother has had the issue on his I9000 and he managed to bring back the IMEI by flashing a stock ROM.
If you have a backup of your /efs folder you should restore that. If not, for future reference, you should use Root Explorer or any other file system explorer to backup your folder and have it ready in case **** happens.
Some Kernels, including Siyah Kernel back the folder automatically.

Darkmind1 said:
First of all, never ever give an IMEI over the Internet, especially your true one. It is enough to mention that your IMEI has been modified. IMEIs can be stolen and in some countries there is a blacklist of them and you risk getting fined or, in some instances, prison.
Now, what ROM are you on? Usually IMEI corruption takes place when you flash custom ROMs. What you should try is flash a stock ROM on your phone. I know my brother has had the issue on his I9000 and he managed to bring back the IMEI by flashing a stock ROM.
If you have a backup of your /efs folder you should restore that. If not, for future reference, you should use Root Explorer or any other file system explorer to backup your folder and have it ready in case **** happens.
Some Kernels, including Siyah Kernel back the folder automatically.
Click to expand...
Click to collapse
I know that this imei is a developer one. I have bought this phone over the internet i didnĀ“t briked the imei. I have flashed back to several original roms, but no luck,

Z3X box..
Sent from my GT-I9100P using Tapatalk 2

Trying stock rom works
I had the same issue i unstalled back the stock rom and bam!! i got my original imei back :good:

Related

[Q] Generic IMEI i9300 0049.. Can't Recover

Hi, my Imei is corrupted, I flashed a custom rom, and I lost my efs/imei, now my IMEI is 0049..and can't do anything.
My best friend has got the same mobile (Galaxy i9300 s3), and he gave to me his efs folder and a back up, I tried to fix my S3 with it, and it doesn't work, when I reboot the nv_data.bin and md5 are generated by the SO, and they are not the same as I copied from my friend.
I have tried to recover it by all ways, s2 guides, recover your imei in 9 steps..but it does not work.
I also tried stock rom, and it is impossible I cannot get a "normal" imei, always 0049..
Any ideas?I need the phone as soon as possible, that is why I don't want to send it to SAT, here in Spain are 15/20 days for repairing T.T
I hope you can help me, Thanks!
PD: If you are here to say I stolen the phone, please DON'T post anything, because I really need it and I payed for it as you DID! :good:
pepu said:
Hi, my Imei is corrupted, I flashed a custom rom, and I lost my efs/imei, now my IMEI is 0049..and can't do anything.
My best friend has got the same mobile (Galaxy i9300 s3), and he gave to me his efs folder and a back up, I tried to fix my S3 with it, and it doesn't work, when I reboot the nv_data.bin and md5 are generated by the SO, and they are not the same as I copied from my friend.
I have tried to recover it by all ways, s2 guides, recover your imei in 9 steps..but it does not work.
I also tried stock rom, and it is impossible I cannot get a "normal" imei, always 0049..
Any ideas?I need the phone as soon as possible, that is why I don't want to send it to SAT, here in Spain are 15/20 days for repairing T.T
I hope you can help me, Thanks!
PD: If you are here to say I stolen the phone, please DON'T post anything, because I really need it and I payed for it as you DID! :good:
Click to expand...
Click to collapse
What rom did you try to flash? I've flashed many many rooms and never had an issue like this.
Sent from my GT-I9300 using Tapatalk 2
pepu said:
Hi, my Imei is corrupted, I flashed a custom rom, and I lost my efs/imei, now my IMEI is 0049..and can't do anything.
My best friend has got the same mobile (Galaxy i9300 s3), and he gave to me his efs folder and a back up, I tried to fix my S3 with it, and it doesn't work, when I reboot the nv_data.bin and md5 are generated by the SO, and they are not the same as I copied from my friend.
I have tried to recover it by all ways, s2 guides, recover your imei in 9 steps..but it does not work.
I also tried stock rom, and it is impossible I cannot get a "normal" imei, always 0049..
Any ideas?I need the phone as soon as possible, that is why I don't want to send it to SAT, here in Spain are 15/20 days for repairing T.T
I hope you can help me, Thanks!
PD: If you are here to say I stolen the phone, please DON'T post anything, because I really need it and I payed for it as you DID! :good:
Click to expand...
Click to collapse
Do not flash another phone's EFS, it's duplicating IMEI, is illegal and is not allowed on XDA. Even the discussion of it.
If you didn't have a EFS backup for your phone and tried some guides already, there's not much you can do. Send it back to samsung?

IMEI Missing & no EFS backup

Hi all,
I recently lost my IMEI number (I do not know how, I did not install any weird apps).
The IMEI number says unknown, the network does not work.
Some things to note:
I am not rooted, never have
Using official FW 2.3.3
Never made EFS backup
Have original box (with IMEI number might help?)
Did not install any malcious application
I have read that if I root the device and try the GSII_repair it MIGHT fix, but I don't want to run into more trouble having to result in a BRICK or anything.
Is there any way to restore the EFS thing without having to resort to Samsung?
Solution?
You might need to root your phone.
Since it only needs a new IMEI number you could backup all of your apps and settings and reflash the same firmware and finally restore apps.
This will almost likely require you to root
GUIDE 1
GUIDE 2
GUIDE 3
Good luck and don't give up!:fingers-crossed:
suenoromis said:
You might need to root your phone.
Since it only needs a new IMEI number you could backup all of your apps and settings and reflash the same firmware and finally restore apps.
This will almost likely require you to root
GUIDE 1
GUIDE 2
GUIDE 3
Good luck and don't give up!:fingers-crossed:
Click to expand...
Click to collapse
I tried rooting the phone,
I tried the GSII_Repair, no luck.
Any hope?
Without a backup, no. If you've never messed with the phone (not rooted/not run non-stock firmware) & you bought the phone new, your warranty should be good. If so, use it. If not, it's either pay Samsung/authorised repairer to fix it, or ask local mobile repair shops. You may get lucky.

[Q] Empty IMEI, Baseband version unknown, EFS folder backup exist, restore efs not he

Hi,
I used Android 4.1.2 and CM10.1 - on Samsung Galaxy S II model I9100.
During a phone conversation it was hanged up, and the phone could not connect to the network anymore.
I got an error when tried to manually search for network operator, which lead me, after a research in the net, to find out that the IMEI of the phone is empty. I see also that the Baseband version is 'unknown'.
I have a backup of the efs folder and tried to restore it by manual overwrite it - with no success.
I also followed the guide to recover manually the IMEI from here: http://forum.xda-developers.com/showthread.php?t=1264021 with no success.
I tried to get back to a backup of the original ROM I used before (this time using ODIN), and now I get NULL/NULL in the IMEI and I still get Baseband 'unknown'.
Also re-installing the radio did not help. now when looking for network operator the error is different - now it is telling me that there is no SIM card.
the NULl/NULL IMEI and Baseband version is 'unknown' are still here and I still can't connect to the network.
last input: after 2 days of phone being unused - it suddenly got back to work, the original IMEI got back in, and it connected to the network. this happened without me doing anything, and it held for half a day, then the phone got back to the non-functioning mode as described above, again in the middle of a phone conversation.
I am out of new ideas, all related threads in here did not help.
Can anybody help ?
Does anybody know the reason for this issue?
Can tell what is the thing that is probably corrupted, and in case that the problem is with the files in efs folder - why doesn't a restore of the efs folder (including chown for nv_data.bin to user radio) did not help?
Thanks !
-- Amit.
amita74 said:
Hi,
I used Android 4.1.2 and CM10.1 - on Samsung Galaxy S II model I9100.
During a phone conversation it was hanged up, and the phone could not connect to the network anymore.
I got an error when tried to manually search for network operator, which lead me, after a research in the net, to find out that the IMEI of the phone is empty. I see also that the Baseband version is 'unknown'.
I have a backup of the efs folder and tried to restore it by manual overwrite it - with no success.
I also followed the guide to recover manually the IMEI from here: http://forum.xda-developers.com/showthread.php?t=1264021 with no success.
I tried to get back to a backup of the original ROM I used before (this time using ODIN), and now I get NULL/NULL in the IMEI and I still get Baseband 'unknown'.
Also re-installing the radio did not help. now when looking for network operator the error is different - now it is telling me that there is no SIM card.
the NULl/NULL IMEI and Baseband version is 'unknown' are still here and I still can't connect to the network.
last input: after 2 days of phone being unused - it suddenly got back to work, the original IMEI got back in, and it connected to the network. this happened without me doing anything, and it held for half a day, then the phone got back to the non-functioning mode as described above, again in the middle of a phone conversation.
I am out of new ideas, all related threads in here did not help.
Can anybody help ?
Does anybody know the reason for this issue?
Can tell what is the thing that is probably corrupted, and in case that the problem is with the files in efs folder - why doesn't a restore of the efs folder (including chown for nv_data.bin to user radio) did not help?
Thanks !
-- Amit.
Click to expand...
Click to collapse
EFS is corrupt.This was a bomb waiting to explode.I suggest you to go back to stock JB 4.1.2 ROM (see my signature),and flash Apolo kernel.Go to recovery and restore backup.Do not overwrite it manually.Do it in Recovery.
New inputs
GamingDj said:
EFS is corrupt.This was a bomb waiting to explode.I suggest you to go back to stock JB 4.1.2 ROM (see my signature),and flash Apolo kernel.Go to recovery and restore backup.Do not overwrite it manually.Do it in Recovery.
Click to expand...
Click to collapse
Hi GamingDj,
First thanks for the reply.
I want to add more inputs and few questions:
Right now, after more then another day that the phone was not functioning - it got back to operate again, and again, without me doing anything that will cause that to happen.
During the last time that it happened, this held the pone in a working state for about half a day until it hanged up on me during a phone conversation I had - and the phone stopped working again, so I am not very optimistic about the phone getting back to work for good right now....
I have a bit more data that I forgot to mention before:
1. About a day before this problem happened, Avast anti virus offered me to update the Avast Anti theft software, this required root access and I don't know if it has something with the reported problem or not.
2. The efs folder was "handled" by GalaxSim Unlock, after the phone got locked due to official upgrade to JB. Originaly this was an O2 locked phone, then it was unlocked with a code, but due to the upgrade to JB it got SIM locked again and the codes did not work anymore, which caused me to use the GalaxSim Unlock application - that indeed unlocked my phone. I know that the GalaxSim Unlock application changed some data in the nv_data.bin in efs folder, but after it unlocked my phone it was working fine for about a month or more, so I can't tell that this is the cause for the suspected corruption in the efs folder.
I have both backup of the efs folder before and after the unlock operation by GalaxSim unlock application.
Can you explain in more details:
1. Why you suggest to flush Apolo kernel? is it in order to have the phone rooted? can you give a link for this kernel?
2. Restore backup from where? should I have a backup file that you point to? not sure what backups I have that may have data that I don't already use.
3. Does the new data help with debugging this issue?
Thanks again.
-- Amit.
amita74 said:
Hi GamingDj,
First thanks for the reply.
I want to add more inputs and few questions:
Right now, after more then another day that the phone was not functioning - it got back to operate again, and again, without me doing anything that will cause that to happen.
During the last time that it happened, this held the pone in a working state for about half a day until it hanged up on me during a phone conversation I had - and the phone stopped working again, so I am not very optimistic about the phone getting back to work for good right now....
I have a bit more data that I forgot to mention before:
1. About a day before this problem happened, Avast anti virus offered me to update the Avast Anti theft software, this required root access and I don't know if it has something with the reported problem or not.
2. The efs folder was "handled" by GalaxSim Unlock, after the phone got locked due to official upgrade to JB. Originaly this was an O2 locked phone, then it was unlocked with a code, but due to the upgrade to JB it got SIM locked again and the codes did not work anymore, which caused me to use the GalaxSim Unlock application - that indeed unlocked my phone. I know that the GalaxSim Unlock application changed some data in the nv_data.bin in efs folder, but after it unlocked my phone it was working fine for about a month or more, so I can't tell that this is the cause for the suspected corruption in the efs folder.
I have both backup of the efs folder before and after the unlock operation by GalaxSim unlock application.
Can you explain in more details:
1. Why you suggest to flush Apolo kernel? is it in order to have the phone rooted? can you give a link for this kernel?
2. Restore backup from where? should I have a backup file that you point to? not sure what backups I have that may have data that I don't already use.
3. Does the new data help with debugging this issue?
Thanks again.
-- Amit.
Click to expand...
Click to collapse
Follow my guide to flash ICS official.Then root and sim Unlock it(if needed).Then flash Apolo kernel via Recovery.In apolo kernel Recovery go to EFS menu,and click restore.Now restore your backup.
status update
GamingDj said:
Follow my guide to flash ICS official.Then root and sim Unlock it(if needed).Then flash Apolo kernel via Recovery.In apolo kernel Recovery go to EFS menu,and click restore.Now restore your backup.
Click to expand...
Click to collapse
Hi,
Just want to update that its been about a week that the phone works without me doing anything, therefore not proceeding with the recovery process you suggested.
I will update if the problem will be back.
Thanks.

[Q] Flashed Stock Rom 4.3 via ODIN, can't make/receive calls

Hello People
Again, I'm with problems with my S3 since the one time decided to test a custom ROM which turned out to screw my IMEI and got to it back working with BOX in repair service.
I n order to see if the BOX fix did actually solve my signal problem, it was suggested to me in a previous post that I flash the same stock rom via ODIN. Before that, I backed up current EFS as well.
Unfortunately, it seems the problem wasn't entirely solved. Same as before: both my IMEI and S/N are untouched (S/N does not coincide with S/N in the back of phone) and though it says I have a full signal, I'm not registered in network and i can't make or receive calls, sms, etc. Even though I restored the EFS folder, nothing happens.
I really wish not to go back to repair service again. What else can I do about this? Many thanks and excuse my rant. Hope I was thorough and clear on the problem. I also have a EFSv2_basebands_opt4.zip file I downloaded somewhere in xda . Would that help?
Many thanks.
rhrs1987 said:
Hello People
Again, I'm with problems with my S3 since the one time decided to test a custom ROM which turned out to screw my IMEI and got to it back working with BOX in repair service.
I n order to see if the BOX fix did actually solve my signal problem, it was suggested to me in a previous post that I flash the same stock rom via ODIN. Before that, I backed up current EFS as well.
Unfortunately, it seems the problem wasn't entirely solved. Same as before: both my IMEI and S/N are untouched (S/N does not coincide with S/N in the back of phone) and though it says I have a full signal, I'm not registered in network and i can't make or receive calls, sms, etc. Even though I restored the EFS folder, nothing happens.
I really wish not to go back to repair service again. What else can I do about this? Many thanks and excuse my rant. Hope I was thorough and clear on the problem. I also have a EFSv2_basebands_opt4.zip file I downloaded somewhere in xda . Would that help?
Many thanks.
Click to expand...
Click to collapse
Flash a patched modem and kernel from here >> https://drive.google.com/folderview...sharing&tid=0B6MIUd7HJudAbU5YaGkzOUowMG8#list << see if that works if it doesyou will always need to use the patched files.
Thanks tallman43! I'll try that. Also, I noticed now that the EFS folder is EMPTY :/. and the backup .tar I made with CWM says it's 0 bytes? wtf?
still, in phone info, imei and s/n are there. weird?
THANK YOU
Flash a patched modem and kernel from here >> https://drive.google.com/folderview?...kzOUowMG8#list << see if that works if it doesyou will always need to use the patched files.
Click to expand...
Click to collapse
Your recommendation worked like a charm. My signal is up and running normally. MANY THANKS tallman43.
Lastly, even if I sometime I decide to try out a custom ROM (unlikely at the moment, but who knows?), I still have to flash patched kernel&modem? or in case of factory reset (I will be selling the phone soon) ?That custom really messed up my phone...
rhrs1987 said:
Your recommendation worked like a charm. My signal is up and running normally. MANY THANKS tallman43.
Lastly, even if I sometime I decide to try out a custom ROM (unlikely at the moment, but who knows?), I still have to flash patched kernel&modem? or in case of factory reset (I will be selling the phone soon) ?That custom really messed up my phone...
Click to expand...
Click to collapse
Yes you will always need them.
tallman43 said:
Flash a patched modem and kernel from here >> https://drive.google.com/folderview...sharing&tid=0B6MIUd7HJudAbU5YaGkzOUowMG8#list << see if that works if it doesyou will always need to use the patched files.
Click to expand...
Click to collapse
tallman43 said:
Yes you will always need them.
Click to expand...
Click to collapse
I would still like to solve the problem at its roots: to fix the "not registered in network" problem whenever factory reset or stock ROM flash via odin is done. That is simply not normal. I might be selling the phone soon and the new user won't most probably know he/she would have to apply a patched kernel or etc.. ( let alone about rooting the phone).
Basically, bring the phone back to it's original sound state before I tried out the custom ROM. What can I do about that?
Hope I'm not being annoying.. just trying to get to the bottom of things
rhrs1987 said:
I would still like to solve the problem at its roots: to fix the "not registered in network" problem whenever factory reset or stock ROM flash via odin is done. That is simply not normal. I might be selling the phone soon and the new user won't most probably know he/she would have to apply a patched kernel or etc.. ( let alone about rooting the phone).
Basically, bring the phone back to it's original sound state before I tried out the custom ROM. What can I do about that?
Hope I'm not being annoying.. just trying to get to the bottom of things
Click to expand...
Click to collapse
There is nothing you can do without your original efs backup.Only a service repair can fix it.
tallman43 said:
There is nothing you can do without your original efs backup.Only a service repair can fix it.
Click to expand...
Click to collapse
Understood. I think I have the original EFS in my SD, though I tried replacing it once and it didn't work out... I suppose I'll have to make do. Thanks for everything man
Flashing modem with Ariza patch was bad idea. Your efs folder is screwed up now and you are addicted to constantly flash this dirty workaround.
If anyone have problems with registering in network please check your device serial number first. It must be the same as on the sticker under battery. If it's not then type *#0011# and check info under IMEI CERT. If there is FAIL info then you should use any box ie Z3X to correct phone's serial number. It takes only few minutes and is cheap. It's better long-term way than patching and permanently destroying your efs informations.
If you have backup then you should flash normal modem and restore original efs partition. Then find any GSM service center with box and tell them to fix serial number. It shouldn't cost more then 5-10 dollars.
____________________________________________
P3110 / I9300 / I9100 / NEXUS 5 / iPAD2
SirKunon said:
Flashing modem with Ariza patch was bad idea. Your efs folder is screwed up now and you are addicted to constantly flash this dirty workaround.
If anyone have problems with registering in network please check your device serial number first. It must be the same as on the sticker under battery. If it's not then type *#0011# and check info under IMEI CERT. If there is FAIL info then you should use any box ie Z3X to correct phone's serial number. It takes only few minutes and is cheap. It's better long-term way than patching and permanently destroying your efs informations.
If you have backup then you should flash normal modem and restore original efs partition. Then find any GSM service center with box and tell them to fix serial number. It shouldn't cost more then 5-10 dollars.
____________________________________________
P3110 / I9300 / I9100 / NEXUS 5 / iPAD2
Click to expand...
Click to collapse
I have never flashed the Ariza patch nor have I even mentioned it on my previous posts explaining the problem. Fixing the s/n issue is indeed adviseable, but paying to correct s/n using box here where I live is ASTRONOMICALLY expensive. They should answer for never having fixed it, but they won't. Here is a hell of a lot more than 5-10 dollars, unfortunately.
Believe me , I'm no happier in applying this sorry fix every time I want to factory reset or upgrade, etc; it's the only option I have left at the moment.
Those files you have flashed, I mean kernel and modem are patched with Ariza's method. It is called Ariza patch and it is latest solution you should take to resurrect your phone because it is a destructive one.
Sorry to hear that you can't repair it as it should be especially if you want to sell this device.
____________________________________________
P3110 / I9300 / I9100 / NEXUS 5 / iPAD2
SirKunon said:
Flashing modem with Ariza patch was bad idea. Your efs folder is screwed up now and you are addicted to constantly flash this dirty workaround.
If anyone have problems with registering in network please check your device serial number first. It must be the same as on the sticker under battery. If it's not then type *#0011# and check info under IMEI CERT. If there is FAIL info then you should use any box ie Z3X to correct phone's serial number. It takes only few minutes and is cheap. It's better long-term way than patching and permanently destroying your efs informations.
If you have backup then you should flash normal modem and restore original efs partition. Then find any GSM service center with box and tell them to fix serial number. It shouldn't cost more then 5-10 dollars.
____________________________________________
P3110 / I9300 / I9100 / NEXUS 5 / iPAD2
Click to expand...
Click to collapse
SirKunon said:
Those files you have flashed, I mean kernel and modem are patched with Ariza's method. It is called Ariza patch and it is latest solution you should take to resurrect your phone because it is a destructive one.
Sorry to hear that you can't repair it as it should be especially if you want to sell this device.
____________________________________________
P3110 / I9300 / I9100 / NEXUS 5 / iPAD2
Click to expand...
Click to collapse
oh... well, that I didn't know :$ SirKunon. I understand and totally agree with you on everything. I'll see maybe if I can find some place cheaper for getting it repaired... Many thanks
hi i was wondering if you guys can help me,i have your problem but i have an efs backup,but i cant seem to be able to restore my imei,i tried Ktool,efs professional,nothing seems to work,i should mention that the efs backup was from a Samsung 4.1.2 stock now my phone is on CM11
thanks
rhrs1987 said:
Hello People
Again, I'm with problems with my S3 since the one time decided to test a custom ROM which turned out to screw my IMEI and got to it back working with BOX in repair service.
I n order to see if the BOX fix did actually solve my signal problem, it was suggested to me in a previous post that I flash the same stock rom via ODIN. Before that, I backed up current EFS as well.
Unfortunately, it seems the problem wasn't entirely solved. Same as before: both my IMEI and S/N are untouched (S/N does not coincide with S/N in the back of phone) and though it says I have a full signal, I'm not registered in network and i can't make or receive calls, sms, etc. Even though I restored the EFS folder, nothing happens.
I really wish not to go back to repair service again. What else can I do about this? Many thanks and excuse my rant. Hope I was thorough and clear on the problem. I also have a EFSv2_basebands_opt4.zip file I downloaded somewhere in xda . Would that help?
Many thanks.
Click to expand...
Click to collapse
May i ask a few questions about your problem?
Which version were you using when you desided to use a custom rom?
Was your phone ever rooted before installing a custom rom (when you were on official)
Did you upgrade your phone before? (Official via ota or odin)
thewalekk said:
May i ask a few questions about your problem?
Which version were you using when you desided to use a custom rom?
Was your phone ever rooted before installing a custom rom (when you were on official)
Did you upgrade your phone before? (Official via ota or odin)
Click to expand...
Click to collapse
I was on 4.2.2 leaked version ROM some guy installed at a repair service some time ago when the phone belonged to my mother. I was actually rooted using the CF AutoRoot method, with Philz CWM recovery. I decided to change to a custom 4.3 without having changed first to a stock 4.3.
The problem came when, within the custom ROM's aroma installer, I ticked an option to upgrade the modem to some build I can't remember now and my signal became screwed up. I informed this in the developer's custom rom discussion thread about the issue to which he replied that the problem was that the EFS folder tried to convert from v1 to v2 and failed (this was when I learned of the whole efs version folder change since build XXX (don't remember).
I download a stock unbranded 4.3 ROM and flashed it via ODIN, believing that would solve the issue; it didn't. Finally, I became desperate and took it to a repair service where they used box. Apparently, late did I notice s/n was not the same as the one in the back of phone. I'm guessing that would solve the problem? I don't know.
i am sorry for your loss . i wish you had all that info you learned before a try and fail. now that your imei number is a clon number, and once a box tempers with that you cant go back even if you have your orijinal efs folder or backup. you should always have that 2 patched modem and kernel files on your sd card just incase. you can use custom 4.3 with the patched files and get a signal but you will always have some lags after some time because of the kernel. and lucky you samsung stopped updating s3 officially because patched files are only for 4.3. if you dont have a desire to use custom 4.4.4 kitkat roms then you are good to go and when it comes to sell the device, the price will be much lower then an original s3.
thewalekk said:
May i ask a few questions about your problem?
Which version were you using when you desided to use a custom rom?
Was your phone ever rooted before installing a custom rom (when you were on official)
Did you upgrade your phone before? (Official via ota or odin)
Click to expand...
Click to collapse
thewalekk said:
i am sorry for your loss . i wish you had all that info you learned before a try and fail. now that your imei number is a clon number, and once a box tempers with that you cant go back even if you have your orijinal efs folder or backup. you should always have that 2 patched modem and kernel files on your sd card just incase. you can use custom 4.3 with the patched files and get a signal but you will always have some lags after some time because of the kernel. and lucky you samsung stopped updating s3 officially because patched files are only for 4.3. if you dont have a desire to use custom 4.4.4 kitkat roms then you are good to go and when it comes to sell the device, the price will be much lower then an original s3.
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Well, actually, IMEI didn't get cloned; of that I'm certain. IMEI is just the same as it was before I took it for the first time to repair service. It was the S/N that got changed somehow. Should I get them to correct the S/N, and use the original EFS folder (I found it, i think), would that correct all problems?
S/N number is the same with imei number as when you dial *#06# . And as i said before you cant go back even if you have your original efs folder. Dial *#06# and check your imei number from an " imei check site " you can find on google search. That will tell you what i mean.
There are: IMEI, device serial number and Android serial number. First two numbers are on the sticker in battery Bay. They must be correct because are used to authorize IMEI certificate.
Samsung's IMEI begins from 35.....
Serial number usually from RF......
If you see serial number in HEX format in phone's info section, something like f1abcadef1.. than it is android not device serial number and this mean troubles with authorize SIM card in operator network, even if it shows proper signal power.
I don't know there is any secret code to display serial number but there is plenty of phone's info apps in playstore which displays this alphanumeric string.
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P3110 / I9300 / I9100 / NEXUS 5 / iPAD2

Galaxy S3 I9300 Baseband unknown/IMEI unknown

I have replaced my S3's broken screen with a new one. The think is now i have "baseband unkown" and "IMEI unknown" and i can't make any calls. I have no network. I have read numerous threads here on xda and elsewhere but nothing seems to work. I haven't backed up the efs folder nor the IMEI. I don't even have the original screen with the IMEI on it. (If i only i knew back then) . I don't even know what version of I9300 i have. I think is the Exynos one. I have installed many Stock roms with different firmware and custom Roms but nothing works. I even tried to flash different modems but still nothing. Is there a way to find my IMEI and restore my baseband? Now i am on lineageos 14.1.
There is only 1 model of the GT-i9300.
If you flashed the latest stock ROM with Odin and the imei does not reappear, it likely that the EFS folder has been corrupted. This can be corrected by flashing the phone via jtag but you will need the original IMEI.
audit13 said:
There is only 1 model of the GT-i9300.
If you flashed the latest stock ROM with Odin and the imei does not reappear, it likely that the EFS folder has been corrupted. This can be corrected by flashing the phone via jtag but you will need the original IMEI.
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So basically it's a lost cause. I don't have the IMEI. Is there a way to read the IMEI that is hardcoded on the board?
MrGoochi said:
So basically it's a lost cause. I don't have the IMEI. Is there a way to read the IMEI that is hardcoded on the board?
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Not that I know of.
Do you have the original box, receipt, or cell contract? The IMEI is sometimes printed on these items.
audit13 said:
Not that I know of.
Do you have the original box, receipt, or cell contract? The IMEI is sometimes printed on these items.
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No, it is an old phone that i don't use. I just happened to need it for a few days until my phone was fixed. Anw thanks for the info and the help. :good:

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