[Q] GT-I9100 Serial Number - Galaxy S II Q&A, Help & Troubleshooting

Hey,
I have a question regarding serial number. I am currently using Official ICS 4.0.3, CSC = COA, the IMEI is displayed correctly, but it looks like the serial number that is read by Android is totally different than what is displayed on the sticker on the back of the phone. It is something like 0019...
Does this mean that the /efs folder is screwed up? Note that I used various ROMs in the past: DarkyROM, ICS 4.0.4 ROMs (where serial number was displayed 0000...), Samsung Jelly Bean Leak, CM9 and CM10 - based ROMs. When I revert, I always flash an Open Europe full wipe Gingerbread version (XXKL1) and then incrementally update to the version with my corresponding CSC.
When I connect the phone to Samsung Kies, it is able to read the phone, it says this is the latest update (4.0.3), but I kinda find it hard to believe so I am curious whether it's S/N screwed up. Also, when I looked on Sammobile.com, I managed to find downloadable 4.0.4 OTA files for Cosmote Romania (COA).
Some threads mention flashing bootloaders or flashing official ROMs. I already did flash official ROMs but never dealt with bootloaders so far, so before I do anything, I would like some help if anyone can provide me with some specific information regarding this issue.
Furthermore, this may be important for future potential warranty service and this may help other people with similar issues.
Thanks a lot!

You have a question?
Isn't there a special section for that?

Glebun said:
You have a question?
Isn't there a special section for that?
Click to expand...
Click to collapse
Yeah, I noticed after, sorry, if the Moderators can move it, that would be great, anyway if you know the answer, that would be great as well.

hi
same here, also wondering why the S/N on the IMEI Sticker on the back of the phone is diffrent than the S/N that show up under Settings>About Device>Status>Serial number. the imei is the same. (GT-9100, 4.0.3). there is another way/code to find the S/N ?
I noticed that N7100 and GT-I9300 IMEI and S/N that displayed on the back is exactly the same as the android shows.
thanks in advance

Related

[Q] Regarding upgrading firmware and Courrier Network

I previously upgraded my phone's firmware to 2.3.6, seeing that Bell Canada's stock firmware for the SGS2 is 2.3.3, and has never received an update since release. 2.3.6 is much better in many ways, however the problem I encountered was random network (3g/4g) disconnection, while always being able to make and receive calls and texts. Curious to know if there is a work around to this problem? If I were to take an educated guess, could the modem file of the rom be the cause of this problem? Seeing that my SGS2 is a i9100M model, and the firmware "changes" the phone's model to i9100. Furthermore causing the network to not recognize the phone's modem?
I really would like to be able to avoid this issue because I downgraded back to stock branded courrier firmware. 2.3.3 is hard on battery usage and touch response is much worse than 2.3.6.
Knocturnal88 said:
I previously upgraded my phone's firmware to 2.3.6, seeing that Bell Canada's stock firmware for the SGS2 is 2.3.3, and has never received an update since release. 2.3.6 is much better in many ways, however the problem I encountered was random network (3g/4g) disconnection, while always being able to make and receive calls and texts. Curious to know if there is a work around to this problem? If I were to take an educated guess, could the modem file of the rom be the cause of this problem? Seeing that my SGS2 is a i9100M model, and the firmware "changes" the phone's model to i9100. Furthermore causing the network to not recognize the phone's modem?
I really would like to be able to avoid this issue because I downgraded back to stock branded courrier firmware. 2.3.3 is hard on battery usage and touch response is much worse than 2.3.6.
Click to expand...
Click to collapse
You didn't have to downgrade. You just needed to find modems that are more compatible with your network. Modem thread here. (easily found with a google search for "xda modems galaxy s2"... it was the fourth or fifth result)
ctomgee said:
You didn't have to downgrade. You just needed to find modems that are more compatible with your network. Modem thread here. (easily found with a google search for "xda modems galaxy s2"... it was the fourth or fifth result)
Click to expand...
Click to collapse
Yeah, I already looked at that thread, including the thread dedicated to Bell/virgin courier. So I guess you missed the point of my question. I did ask what I could do to work around the problem, afterwards taking an educated guess that the modem was the issue. Maybe this forum deals with a lot of people that don't use search, but lets not put everybody on the same boat. Thanx
Knocturnal88 said:
Yeah, I already looked at that thread, including the thread dedicated to Bell/virgin courier. So I guess you missed the point of my question. I did ask what I could do to work around the problem, afterwards taking an educated guess that the modem was the issue. Maybe this forum deals with a lot of people that don't use search, but lets not put everybody on the same boat. Thanx
Click to expand...
Click to collapse
No offense intended, but the wording of your question didn't lead me to believe you looked at that thread, and that you were just speculating at this point that it was an issue with your modem. Sorry.
But in answer to what you could do to work around the problem, if the modem currently flashed to your phone is not ideal to your network operator, there really is no work around other than to flash a modem that is better suited.
No worries, no offense taken, was just justifying myself. So, if I understand correctly, it is the possible to flash the rom without flashing the modem? I'm just thinking logically here, but I have flashed back to stock rom, hence my network issue was resolved. I downloaded the latest 2.3.6 firmware available, so instead of flashing the modem I can leave it blank?
Knocturnal88 said:
No worries, no offense taken, was just justifying myself. So, if I understand correctly, it is the possible to flash the rom without flashing the modem? I'm just thinking logically here, but I have flashed back to stock rom, hence my network issue was resolved. I downloaded the latest 2.3.6 firmware available, so instead of flashing the modem I can leave it blank?
Click to expand...
Click to collapse
Hm... I honestly don't know. Where'd you download the "latest 2.3.6 firmware available"? From Intratech's official firmware thread?
If so, those packages contain everything in the zip, including the modem. I think what you can do is open up the package, and remove "modem.bin", and zip it back up. That may leave the modem you currently have... But I don't know for sure, I've never tried it.

Please help me

Hello,
I would sincerely appreciate if someone shed some light for me on what the Baseband version of my phone means.
I bought my phone outside of my wireless provider (Canada - Telus) 2nd hand.
It's running baseband XXKG2 (see attachment).
I want to upgrade to to ICS but I can't find an ICS with that Baseband.
What is the baseband? Do different Baseband phones differ in their hardware?
How can I upgrade to ICS? (phone is rooted).
Appreciate all the help!
Thanks,
Vitaly
It doesn't matter - baseband is the modem. You won't ever find an ICS version that matches, because any ICS firmware will contain a newer baseband/modem than XXKG2.
Just download any official ICS firmware for the I9100, any will work. (Just make sure it's for the I9100, and NOT for the I9100G) Though you'll lose root once you flash it.
Although... you should probably read some stuff, seems you need to know some basic knowledge before I'd recommend you start flashing anything.
FAQ
http://forum.xda-developers.com/showthread.php?t=1065995
NEW HERE
http://forum.xda-developers.com/showthread.php?t=1134290
bible
http://forum.xda-developers.com/showthread.php?t=1473577
Guide
http://forum.xda-developers.com/showthread.php?t=1125282
Thanks for the reply.
So the baseband is a software version of the modem?
When I get my ROM I should be mostly concerned with localization, right?
vitalious said:
Thanks for the reply.
So the baseband is a software version of the modem?
When I get my ROM I should be mostly concerned with localization, right?
Click to expand...
Click to collapse
Perhaps you should read that which I linked you to....
I looked through all these threads and while they did clarify some things, they mention nothing of the baseband version.
vitalious said:
I looked through all these threads and while they did clarify some things, they mention nothing of the baseband version.
Click to expand...
Click to collapse
One of my previous replies, I said "baseband is the modem"... Then your immediate post after that was "So the baseband is a software version of the modem?" I wasn't answering that question, since I had already answered it, and didn't think it needed clarification. I guess I was wrong. Yes, you can think of it that way.
My suggestion of reading what I linked you to was for your other question.
You can also find nearly any answer to just about any question you can think of in the roll-up sticky in the General section.
My suggestion is to look under the battery on the info sticker which model you have. If it says GT-I9100M, go to Sammobile.com, download the ICS for that phone, UGLD3 and install it through Odin. If you bought it in Canada, there are good chance that it is a I9100M and not a I9100. There is no hardware difference between the two model but the UGLD3 firmware is made specifically for the 9100M model.
urself25 said:
My suggestion is to look under the battery on the info sticker which model you have. If it says GT-I9100M, go to Sammobile.com, download the ICS for that phone, UGLD3 and install it through Odin. If you bought it in Canada, there are good chance that it is a I9100M and not a I9100. there is not hardware difference between the two model but the UGLD3 firmware is made specifically for the 9100M model.
Click to expand...
Click to collapse
His screenshot in post 1 shows model number GT-I9100, not M.
EDIT: actually, your advice is good. He said that he bought the phone second hand. So it could be an I9100M with I9100 firmware installed. Sticker label under the battery is a good way to know for sure.
ctomgee said:
His screenshot in post 1 shows model number GT-I9100, not M.
EDIT: actually, your advice is good. He said that he bought the phone second hand. So it could be an I9100M with I9100 firmware installed. Sticker label under the battery is a good way to know for sure.
Click to expand...
Click to collapse
Yes thats the issue with the 9100M, with a I9100 firmware, only the sticker can really tell us if it is a I9100 or a I9100M.
urself25 said:
Yes thats the issue with the 9100M, with a I9100 firmware, only the sticker can really tell us if it is a I9100 or a I9100M.
Click to expand...
Click to collapse
As far as I know, functionally there is no difference between an I9100 and an I9100M. Just the bootscreen, about phone info, and build.prop. Which is why I9100 firmwares and ROMs work on an I9100M.
Thanks
Thanks for the answer guys.
I checked the sticker and it is indeed a regular GT-I9100.
So any 9100 ICS ROM will work? Just pop something localized to North America?
Thanks again for the help - wonderful community.
Vitaly
vitalious said:
Thanks for the answer guys.
I checked the sticker and it is indeed a regular GT-I9100.
So any 9100 ICS ROM will work? Just pop something localized to North America?
Thanks again for the help - wonderful community.
Vitaly
Click to expand...
Click to collapse
If it's an i9100, and not an i9100M, I'd use an i9100 firmware. Those are mostly localized anywhere BUT North America. Mine's running a Poland firmware, and I'm currently using it in the States.

[Q] Anyway to know what your stock rom was?

Hi,
I am a noob to XDA and this is my first post, please dont be mean!! I recently bought a galaxy s2 unlocked version from amazon.com and when i received it i flashed in the new leaked jellybean rom:
Android version: 4.1.2
Baseband version: I9100XXLS6
Kernel version: 3.0.21-462349
[email protected] #3
SMP PREEMPT
Build number: JZO54K.I9100XXLSJ
After flashing this new rom my IMEI number had been reset and i am currently getting no network service. The samsung SRS tool is not picking up my phone for some unknown reason to let me reset the IMEI number. Before flashing the new rom i did not take stock of what the original rom was!! Is there anyway to know what the stock rom was before flashing?
Please help!!!!
Well if it was the factory unlocked version, my guess is you had stock unbranded gingerbread.
unbranded
Poroto said:
Well if it was the factory unlocked version, my guess is you had stock unbranded gingerbread.
Click to expand...
Click to collapse
ohh ok, so can i flash in any 'unbranded' gingerbread stock firmware? regardless of whatever country?
narell said:
Hi,
After flashing this new rom my IMEI number had been reset and i am currently getting no network service.
Please help!!!!
Click to expand...
Click to collapse
When you say, your IMEI number has been reset, I think, the efs folder got corrupted. its where the phone data like IMEI number is stored.
And if you want to flash stock kernel, you can visit this site, but I'm not sure how you can retrieve this efs folder data.
Regards,
Hereticnine.
Your IMEI is also printed on the sticker beneath your phones' battery.
Your probably seeing the sim lock bug and getting confused. if you flash the leaked JB rom your sim lock will be enabled so you will need to use a unlock app.
Use search, we have plenty of topics that cover this since JB leak.
and then some.....
http://forum.xda-developers.com/showthread.php?t=1264021&highlight=9+steps
Neckon said:
Your IMEI is also printed on the sticker beneath your phones' battery.
Click to expand...
Click to collapse
yea i know it is but the imei number behind the battery and the one i am seeing when i dial *#06# are different. i am seeing alot of 9999's and 000's in it..when i googled it i saw it was some sort of manufacturer's default imei or something. i flashed in an unbranded uk rom xwlp7 but when i try to root it using cf-root it is not working now!!!

Cant seem to get this right

Hey guys, I was recently on a custom Rom, which i liked but had so many bugs
I heard good things about the newest 4.3 update, the ones with all the bug fixes so im trying to go back to it
I flashed a really old 4.0.4 version, which for some reason was in dutch? and it had taken away my Imei and luss i couldnt change the CSC within the menu
Ive tried countless other firmwares and ran into nothing but trouble, I tried the leaked 4.3 firmware which was a Irish vodafone version and i couldnt do anything with that
Sam mobile is pretty much useless with the new host, can someone please give me a link which has the right firmware ( Unlock Galaxy S3 gti9300 ) normally i flash BTU. So yeah, The right firmware, where I can update to the latest 4.3, quick download speed and a firmware which has everything included ( I.E IMEI, Signal Etc )
Many thanks, Jack
You'll need to understand the basics if you are going to repair what you've already done to your phone.
Flashing yet another rom won't fix it, if the 4.3 firmware didn't.
You can't repair the imei, unless you have a backup of the efs folder. Instead you'll need a repair centre.
Start with reading the sticky threads in general forum, in particular efs 'know this stuff'.

T820 - device has been flashed with unauthorized software and is locked - SOLVED

I'm not a newbie to flashing ROMs but I am for flashing ROMs to my T820. I was following some instructions and something went horribly wrong. The ONLY thing I'm able to get into is the downloader (pwr+vol-dwn+home). I've gone through some threads about needing to re-flash stock image using Odin. So my question is, is re-falshing stock ROM the answer to this issue? And if so, where can I find a stock ROM for T820. I've looked through all kinds of threads and other sites looking for it and can't find it. I've tried using SamFirm but being as I can't get into my tablet I don't know the CSC/Region to use; and sidebar, it always says unauthorized anyway regardless of what region I put in the form. Does anyone have any advice to get me up and running? I started down this process because I had finally had it with the poor performance after a 2019 update and thought I'd try to give another ROM a try. Now I'd be happy to get back to my poor performing tablet.
gregchak said:
I'm not a newbie to flashing ROMs but I am for flashing ROMs to my T820. I was following some instructions and something went horribly wrong. The ONLY thing I'm able to get into is the downloader (pwr+vol-dwn+home). I've gone through some threads about needing to re-flash stock image using Odin. So my question is, is re-falshing stock ROM the answer to this issue? And if so, where can I find a stock ROM for T820. I've looked through all kinds of threads and other sites looking for it and can't find it. I've tried using SamFirm but being as I can't get into my tablet I don't know the CSC/Region to use; and sidebar, it always says unauthorized anyway regardless of what region I put in the form. Does anyone have any advice to get me up and running? I started down this process because I had finally had it with the poor performance after a 2019 update and thought I'd try to give another ROM a try. Now I'd be happy to get back to my poor performing tablet.
Click to expand...
Click to collapse
Sorry to hear that.
A stock reflashing should help, but of course I can't guarantee that.
The original Samfirm isn't working any more.
You have to take samfirm_reborn0.3.6.2.
As you don't write where you're from I can't recommend a region.
Do you know this site: https://www.sammobile.com/samsung/galaxy-tab-s3/firmware/#SM-T820 as well?
bmwdroid said:
As you don't write where you're from I can't recommend a region.
Click to expand...
Click to collapse
I'm in USA. I didn't see anything on the SamsungMoblie.com site for USA. Any ideas what the region would be?
Appreciate the advice. I downloaded the version of SamFirm you linked and it does seem to work as expected using a known region value.
gregchak said:
I'm in USA. I didn't see anything on the SamsungMoblie.com site for USA. Any ideas what the region would be?
Appreciate the advice. I downloaded the version of SamFirm you linked and it does seem to work as expected using a known region value.
Click to expand...
Click to collapse
What about Canada?
US should be more like them imo
Or cellular south I read somewhere might work as well.
bmwdroid said:
What about Canada?
US should be more like them imo
Or cellular south I read somewhere might work as well.
Click to expand...
Click to collapse
Here's question, does it matter what CSC I use? I get it probably has implications for the cell version (T825 I think?), but for the wifi version is it needed? Could I use any English firmware? The only CSC codes I could find related to USA were ones bound to a carrier. I also found a few "unknown" CSC codes. Any idea what those are for?
@gregchak by searching the net for you I've found these two:
List of Samsung Galaxy CSC Country Specific Product code and region they belong to
List of CSC Country Specific code for Samsung Galaxy & various countries, regions, network carriers, model numbers, variants phone belong to.
www.androidsage.com
Samsung CSC Codes List For All Countries | iHax
Here is the complete Samsung CSC Codes list of all the regions and carriers. The Samsung Country Sepcific Codes list should help you identify the right firmware for your device.
ihax.io
In the past I thought like you that it doesn't matter, but I've realized after searching there are differences in Wifi frequencies/channels in the world.
idk how much the CSC interacts with Wifi.
So it might be ok, but idk exactly.
Btw doesn't it say anything on the T820 packing.
Unfortunately the packaging has long since been thrown out. I bought this tablet about 3-4 years ago. I tried a few different CSC codes that might work. XAR is apparently what worked for me. I was able to get that image installed via Odin and I'm back up and running. I really appreciate your help!
I followed the documentation I could find for getting the CSC from the settings app on my tablet but it says to look for it under Settings -> About Tablet -> Software Information -> Service Provider Software Version section. I don't have such a section. Also, being a tablet, I can't use the phone dialer method either. Do you know what the method is to get the CSC from settings? Or is there another way?
gregchak said:
...... Do you know what the method is to get the CSC from settings? Or is there another way?
Click to expand...
Click to collapse
You could try PhoneINFOsam or HW info, but they need root what you probably don't have any longer, or do you?
Imo as you flashed XAR that should be its CSC (now)
@gregchak and I just found/remembered that:
Download mode shows your original Country code, no matter what CSC you flash
btw. it may be helpful for others if you edit your thread title and add "solved"
bmwdroid said:
@gregchak and I just found/remembered that:
Download mode shows your original Country code, no matter what CSC you flash
btw. it may be helpful for others if you edit your thread title and add "solved"
Click to expand...
Click to collapse
Good point about the title. I edited as you mentioned.
I tried booting into download mode but I don't see any CSC codes noted there. It looks like what I posted pics attached to my original post. The documentation I had read previously said that it is noted in download mode under the carrier section. But since my tablet is WiFi only I don't have a carrier section displayed in download mode.
@gregchak I suspected that, but it might have worked.
Another chance is the serial number perhaps.
But as there will be no more OTA updates published by Samsung it's not really necessary to know the former CSC.
Btw the app PhoneInfoSAM is telling me the original CSC on my WIFI P900.

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