Develop Bugs

SGH-I747M from bricked and no IMEI/ESN to working!

Hi,
After several days trying to unlock my phone and getting it bricked I finally managed to have it in a working condition and unlocked! I'm not sure if what I did unlocked it, but at least it's rooted and in working conditions.
So I decided to share my story and all the steps that I took to fix it. I would have written just the steps but somebody might find specific parts of the story useful.
Original Equipment and Status:
Phone: Samsung Galaxy S3 SGH-I747M (LTE version)
Carrier: Telcel
Country: Mexico
Original Stock OS: 4.1.1
Last working OS: Cyanogenmod 11 Nightly 20141221
Backstory
I'm having a roadtrip that will take a couple of weeks and I got a TMobile SIM to use during my trip through USA and Canada, however my phone was locked to Telcel.
CM brought me some couple of issues with the modem and network selection and as I live right next to the border and cross it every week or so, I was having a hard time switching between carriers and international roaming so I have to upgrade the modem to the latest one (From I747MUMBLL1 to I747MUMUEND3) and for some time I was able to select network operators but still it was locked.
No USSD / Unlock Code Fail
I found on the web there is a way to unlock SG3 for free through the hidden menu, but it didn't work for me but found out USSD codes no longer work in 4.3 so I restored the stock ROM for 4.1.1 (I have no idea how I managed to do this, but got it downgraded) I was able to get to the hidden menu and followed this instructions but I kept using multiple modem versions that aren't for JB the hidden menu didn't gave the option to generate the nv_date file. I think this was due the use of newer modem versions that didn't have the option to initialize the file.
Next attempt was to purchase SIM unlock codes without success, the providers I attempted were TheUnlockingCompany and CellUnlocker, neither of them were able to get me a code to unlock the phone
Also attempted to modify the NV_DATA file but well, it didn't exist in the /efs folder, there were other files but nothing related nv_data.bin. So I really needed to have that file to unlock it but no success in initializing it.
Third-party local unlock dealer
As all the attempts previously failed I needed to have my phone unlocked and was running out of time. So I took it to a local dealer who has more experience unlocking phones. This part I don't have all the info in whatever he did, all I know is that he was unable to work with CM and attempted to unlock it with a brasilian stock firmware, which got it bricked and it was getting more difficult to unlock it.
AFAIK I did have the old bootloader, but his attempts included upgrading the bootloader which includes KNOX and any attempt to restore old rom versions gave me the error SW REV CHECK FAIL : Fused 1 > Binary 0 therefore it was impossible now to get back to stock 4.1.1 and attempt the older modem versions which at this stage found out could have solved the original unlock issue but .... too late.
His attempt with the brasilian stock ROM got the phone bricked and now instead of trying to unlock it I was trying to revive the phone, all my attempts in bypassing KNOX and downgrading the bootloader failed - also attempted to get back to 4.2 and 4.3 through CM 10.1, 10.2 and stock 4.1.1 but bootloader was too recent which prevented me to use those CM versions.
I was able to get it unbricked using CF-AUTO-ROOT - this is a life saver at least to be able to boot the phone, everytime I get a bricked status just by flashing this allowed to boot.
Phone kinda working: NO IMEI NOR ESN
Finally I decided to restore but directly to 4.3 stock for my original provider Telcel. The phone works now... kinda. It boots and gets signal, but NO DATA. I just found out IMEI/ESN information got lost and I didn't have any backup, yes I know I should have but whatever I was doing at least was not touching that information, but this other guy got it messed up.
One interesting thing is that even though there was no IMEI information, but original SIM card works to send/receive calls and SMS. Data doesn't work, but at least calls and SMS does.
Phone included KNOX and was preventing me to use the previously mentioned tool CF-AUTO-ROOT and found this tutorial: http://forums.androidcentral.com/samsung-safe-knox/352922-sprint-galaxy-s3-possible-knox-fix-cf-autoroot.html - this actually works but didn't give me the option to remove KNOX.
THe problem now is that any attempt to use SuperSU through USB debugging was blocked by KNOX but apps opened directly from the phone weren't, with this I installed CWR right away and TitaniumBackup, this last one allowed me to uninstall any KNOX crap. Rebooted the phone and no more issues whatsover in root usage.
As I only have 1 remaining day to have this phone in working conditions and it's christmas today I went on in trying to rebuild my IMEI.
Rebuild IMEI WITHOUT BACKUP
After lot of research and no friends which the same phone that could give their nv_data files, I found out THIS guide (again USSD codes not working so I used EFS Pro to switch USB modes) and basically this is what I did:
Download EFS Professional - Epic tool to work IMEI/ESN info and switch USB mode between MTP+ADB and DEV+MODEM+ADB
Download QPST version 2.7 build 323 NOTE: USE THIS VERSION, NEWER VERSIONS DO NOT INCLUDE RF NV Item Manager
Follow the instructions in the previously mentioned guide, but the USB you can switch it from EFS Pro under Samsung Tools.
It is really important to notice the IMEI number needs to be entered with the HEX checkbox enabled and in reverse.
You probably could do this straight from EFS Professional -> Qualcomm Tools, but this worked for me.
At the end of the guide there was no confirmation or any message the NV information was written successfully, so I just rebooted my phone and success! IMEI is back!
Just to test I tested my T-Mobile SIM and it works! - I'm not sure if this unlocked the phone or whatever the other guy did, but well the phone now accepts any SIM.
No Data / Stuck on EDGE
Now that the phone has the IMEI number and is unlocked I found out DATA still was not working.
I used the tools ESN, MEID and EUIMID Calculator to generate the rest of the missing information which was ESN and MEID. I entered this information in EFS Pro -> Qualcomm NV Tools, checked the boxes and clicked on write making sure the select box next to it was set to Phone.
Rebooted my phone and yes the information was there, however STILL NO DATA.
I came across this life savior - Load this file with NV Item Reader/Writer Some people on the thread say even their already working LTE data achieved better speeds with this.
Rebooted my phone and wallah! DATA and LTE are back! AND UNLOCKED!
What did I learn from all of this? DAMN KNOX and ALWAYS ALWAYS backup /EFS or whatever IMEI/ESN/MEID info is, even if you plan to use custom roms or not, or unlock the phone.
Link to useful tools and sites
CF-AUTO-ROOT - Fix a failed ROM update attempt in ODIN and/or apply permanent root.
ESN, MEID and EUIMID Calculator - Calculate the MEID and ESN based on IMEI
QPST version 2.7 build 323 - Qualcomm Product Support Tool - Modem and service editor
NV Item Reader/Writer - NV Information backup/restore
this life savior - Restore DATA LTE
SamFirmware - Stock roms

I think i love you ...

I317m canadian note2 problems

Please I need help in my sgh-i317m canadian note2
I bought it used but for some reason cant detect my local network (Egyptian)
By some repaire in the service center changing sim card holder and usb scart
It worked and made calls but
It was on 4.4.2 and always hangs and restarts by itself..
So I played more and more in all available options roughly ?
So
I downgraded to 4.1.1 stock via odin but the surprise no imei and baseband unknown ?
My questions are:
1 how to know the original stock between those ?? And if the difference make this hang ??
http://www.sammobile.com/firmwares/database/SGH-I317M/
2 how to restore "servicemode" menu to original one cause I think it is the reason why I have no service now with custom rom based on 4.4.2 with correct imei and proper baseband but cant detect my network ???
Please help ...
Also when connected to computer detected as alcatel cdma phone if I dont modified it from *#0808# menu to pda in all roms stock and custom.
How to reset that phone ?

Before flashing anything, does the imei match the label under the battery?
Often, the imei will not appear because the modem and bootloader are not compatible with the ROM.
How did you downgrade to 4.1.1? A stock 4.1.1 ROM from sammobile.com includes the bootloader and modem to ensure that the imei does not disappear.

Note 2 N7100GSMH not registering on network.

I have had the note 2 for about 2 to 3 years and its been working fine I have a S4 too,I swap between phones so sometimes I use the S4 and sometime the Note 2,I was using my S4 for about 6 months and decided to use my Note 2 for a change and put my sim in and turned it on and it would say there is no sim in the phone ,looking at the settings it had no Baseband and no IMEI ,showing as Unknown ,it was on CFW DN4 and was working fine 6 months ago.so I downloaded a ROM from the SamMoblie website for O2UK cos I am with Sky Mobile and they use there network and didn't see why it wouldn't work.
Anyway.
I flashed the ROM with Odin 3.07 and now it recognize the sim but thinks it on O2UK ,it has a baseband now but the IMEI is the wrong number,and it will not registered on the Sky Network,if you go to More Networks in Settings you can see Sky in the list but will not register on there network.(Can't connect to network,try later)
Any ideas why the IMEI has changed,it not the same as the sticker under the battery..?

spannernick said:
I have had the note 2 for about 2 to 3 years and its been working fine I have a S4 too,I swap between phones so sometimes I use the S4 and sometime the Note 2,I was using my S4 for about 6 months and decided to use my Note 2 for a change and put my sim in and turned it on and it would say there is no sim in the phone ,looking at the settings it had no Baseband and no IMEI ,showing as Unknown ,it was on CFW DN4 and was working fine 6 months ago.so I downloaded a ROM from the SamMoblie website for O2UK cos I am with Sky Mobile and they use there network and didn't see why it wouldn't work.
Anyway.
I flashed the ROM with Odin 3.07 and now it recognize the sim but thinks it on O2UK ,it has a baseband now but the IMEI is the wrong number,and it will not registered on the Sky Network,if you go to More Networks in Settings you can see Sky in the list but will not register on there network.(Can't connect to network,try later)
Any ideas why the IMEI has changed,it not the same as the sticker under the battery..?
Click to expand...
Click to collapse
Hi,
It looks like your EFS partition either got corrupted, formatted, or simply did not mount. The reason you cannot connect to the network is because you're not allowed to. You NEED IMEI because it is used to identify your device. Flashing stock rom wont help you. If you have a backup, go ahead and flash it via recovery. If not, try this link: http://www.androwide.com/2015/07/recover-lost-imei-number-of-android.html
(Insert the exact IMEI that you have on the box/under the battery. It is illegal to fake your IMEI in a majority of countries.)
Regards

Can't do any of what it says on the page cos its for a MTK chip,MediaTek,Galaxy Note 2 N7100 don't have that chip.

Have you tried flashing other stock ROMs? Does the imei start with 0049...?

audit13 said:
Have you tried flashing other stock ROMs? Does the imei start with 0049...?
Click to expand...
Click to collapse
Yes it dose 0049... going to try and fix it with BST dongle,I have flashed original firmware on it now,its 4.4.2,It did have RESURRECTION REMIX on it but can't remember the version maybe the one with Android 5.1.1,then when I put my sim in it to use it after 6 months It would't read the sim,like it was not there and had Baseband Unknown on it..very weird,flashed original firmware on it then it was able to read my sim but then had the 0049... IMEI...??
Hopefully I can fix it with BST dongle,just waiting for the updated version of the BST PCB Adapter V1.1 to be delivered,coming from China.

Looks like the folder containing the IMEI has been corrupted.
Good luck with the cable.

It worked,BST fixed it by puting the IMEI back on the phone,I had to type it in,now it connecting to the network,wow,the best thing I have brought in a long time.. so all fixed.
oh and BST works fine on Windows 10 too.
So Now I have backed up its EFS file and can put custom roms on it without worrying about losing my network,at the moment it has original firmware on it 4.4.2.No plan of puting a Custom ROM on it at the moment,just glad I can use the phone again.
Website: http://www.gsmbest.com/en/ShowProduct.asp?Id=4
I got it from eBay and had to buy a new BST PCB Adapter so it was compatible with 4.4.2 cos the UART cable didn't work ,now it does with v1.2 of the PCB Adapter,I got thats from AliExpress.
Website: https://www.aliexpress.com
Hope this helps someone.

sorry repeated post.

I got a rooted GT-N7100 with different IMEI, no network

Preface: I'm old man and this is my first post feeling exhausted after reading topics I don't fully understand. Please bear with me.
My trusty old Note 2 has had some issues that made me to look for a replacement Note 2 (I spare you for the reasons why still Note 2). Few days ago I won an eBay auction and received an unlocked GT-N7100 supposed to be new.
The very first I did was install of Phone Info Samsung app. This app told my new phone was rooted and Firmware region was Hong Kong. I did a test phone call to my friend: OK, worked normal. Then I took several screenshots of Phone Info's reports, and did the same on my old Note 2 for comparison.
My main concern was to unroot this phone to ensure some for me essential apps would function on it after migration from my old Note 2. I followed online guide and successfully flashed with the H-K firmware N7100ZSUFNJ2. I understood this same region version was required but later I could flash firmware of my choice, the same Nordic I have on my old.
After reboot I tried to make phone call: Not registered on network. I thought first this problem appeared because of firmware and downloaded and flashed Nordic N7100XXSFQA1: the same network problem. The SIM card is the same I use on my old Note 2. More search led me to this possible solution: "How to fix not registered on network" (https://forum.xda-developers.com/showthread.php?t=2745274)
Unfortunately flashing MODEM.tar.md5 didn't solve my problem. So far I had not paid attention to the different IMEI on the label vs dialing *#06# / displayed by Phone Info. This different IMEI was the same before my unrooting process. How come I could make phone call despite this error, it's beyond me?
Another issue on this new phone is that when S-Pen is inserted it claims pen is detached, and when pulled out the S-note won't appear. How come, can be solved?
Please experts, help me to solve this problem. I am ready to supply more info if required.
MarSal53

First thing I recommend is booting into download mode to confirm the model number. Download will show the actual model number.

audit13 said:
First thing I recommend is booting into download mode to confirm the model number. Download will show the actual model number.
Click to expand...
Click to collapse
You mean this: GT-N7100, it's product name? First line under Odin mode

Did you try flashing the latest gt-n7100 rom for Hong Kong since that is the firmware that came with the phone?

audit13 said:
Did you try flashing the latest gt-n7100 rom for Hong Kong since that is the firmware that came with the phone?
Click to expand...
Click to collapse
Yes, I did successfully.

The latest ROM I see for Hong Kong is qa2: https://www.sammobile.com/firmwares/galaxy-note-/GT-N7100/TGY/download/N7100ZSSFQA2/126556/

audit13 said:
The latest ROM I see for Hong Kong is qa2: https://www.sammobile.com/firmwares/galaxy-note-/GT-N7100/TGY/download/N7100ZSSFQA2/126556/
Click to expand...
Click to collapse
I understood the firmware version should be the same in order to unroot successfully. Right now downloading the linked version. Thank so far.

After flashing with linked FW
So I downloaded the file you linked to. Here are screenshots of Phone INFO, on the left before any flashing, on the right after this latest. Need for any other screens?

The bootloader on the left is older at nj2 mixed with qa2. Weird that there is no CSC information.
The picture on the right is more consistently qa2.
The phone you purchased was definitely not new as the IMEI from the dialler should match the IMEI on the phone's printed label.
If flashing the latest firmware doesn't solve the calling issue, not sure what else to suggest other than trying firmware for a different country or a custom ROM.

audit13 said:
The bootloader on the left is older at nj2 mixed with qa2. Weird that there is no CSC information.
The picture on the right is more consistently qa2.
The phone you purchased was definitely not new as the IMEI from the dialler should match the IMEI on the phone's printed label.
If flashing the latest firmware doesn't solve the calling issue, not sure what else to suggest other than trying firmware for a different country or a custom ROM.
Click to expand...
Click to collapse
You asked for CSC info, well here three screenshots. On the left my eBay Note 2 initially, the red in middle is my own Note 2, and on the right eBay after all flashing so far.
EDIT: I forgot to insert SIM on ebay Note2 before screenshot. When inserted the MobileOperator reads elisa / 24405. Interesting, the "24421" missing. Saunalahti was subsidiary of elisa, now merged to main company.

I've read that the differing IMEI issue can be cause if you flashed firmware that contains a lower version modem than what you already had. You can try flashing the latest bootloader and modem for this device with Odin (download in this post). Extract the .rar file and place the file starting with BL in the BL tab and CP in the CP tab in Odin.

h_maharaj said:
I've read that the differing IMEI issue can be cause if you flashed firmware that contains a lower version modem than what you already had. You can try flashing the latest bootloader and modem for this device with Odin (download in this post). Extract the .rar file and place the file starting with BL in the BL tab and CP in the CP tab in Odin.
Click to expand...
Click to collapse
I followed your suggestion and flashed but unfortunately this did not solve my network problem.

The CSC changed to Hong Kong because that's what was in the rom you flashed.

MarSal53 said:
I followed your suggestion and flashed but unfortunately this did not solve my network problem.
Click to expand...
Click to collapse
Try flashing the latest firmware for Nordic region: https://updato.com/firmware-archive-select-model?record=9354FAC415BF11E7963AFA163EE8F90B

audit13 said:
The CSC changed to Hong Kong because that's what was in the rom you flashed.
Click to expand...
Click to collapse
What puzzles me is that this eBay Note before unrooting gave empty fields on Firmware's CSC Code and CSC Country. I'm here flashing the Nordic ROM back again.

h_maharaj said:
Try flashing the latest firmware for Nordic region: https://updato.com/firmware-archive-select-model?record=9354FAC415BF11E7963AFA163EE8F90B
Click to expand...
Click to collapse
Thank you for this, but again after flashing network problem stays. Well, it's midnight here in Helsinki, had to go to bed....

After flashing a stock ROM, are you able to try other sim cards in the phone?

Search result on tampered IMEI
Curious as I am I tested the IMEI displayed by dialing *#06# on three databases. One couldn't tell, two others told this phone were Ericson A3618s. Wow!
On the other hand, Phone INFO's General claims this Note 2 were White while in reality Titanium grey.

Have you made any further progress?
Is it possible that the imei on the battery label has been blacklisted which is why the motherboard was programmed with another imei?
Try entering both imei numbers here: https://www.mobileincanada.com/

audit13 said:
Have you made any further progress?
Is it possible that the imei on the battery label has been blacklisted which is why the motherboard was programmed with another imei?
Try entering both imei numbers here: https://www.mobileincanada.com/
Click to expand...
Click to collapse
Thanks for caring about this problem still. The Canadian site looks more about unlocking. My previous post told about search result from http://www.imeipro.info/ stating the imei on label is clean. I just re-visited another database for second time http://www.imei.info and there I had to pay for Black list check which takes up to 48 hours.
BTW I have kept eye on eBay and wonder how Note 2s are flooding there... Although the seller won't accept returns I wrote request to return in hope eBay takes this as resolution... have to wait a couple of days before that process may start.

Note 7 null IMEI, need to write it back. Donation for sure.

Hello dear XDA users!
First of all I would like to give offer to one that will solve my problem, I will send him 30 EUR directly to his PayPal account.
I am Note 7 Lover as I am collector of these phones.
I have many succesful Note 7 phones recovered from death updates which were fully discharged.
But I did great mistake which I can´t live with.
I had one Note 7 , fully functioning with all connectivities. I managed to install HydraRom and Hydrakernel there on my own as I did it many times before. I am an idiot I didn´t make backup of the system and mainy EFS in working state.
I broke display a little on my primary Note 7 so I needed to recover my TWRP backup on another phone but I accidentally checked restore also EFS partion from my previous phone.
So the phone just turned on and No service, Baseband unknown. My great mistake.
Tried lots of original ROM restore, reflashing HydraRom or radios/kernels, nothing works.
I read a lot about what i did, I have no backup of EFS partion from the one that has problem. I have only Samsung Box with only IMEI written on it, back cover is changed so there is no IMEI or S/N.
I googled a lot, tried all the programs (Z3x, Chimera, Octopus) but none of them has capability to write IMEI directly to the this N930F phone.
I finally found a software called SAMFIX V1.3 and after clicking Baseband in the HydraRom phone menu is visible
The phone is able to look for carriers (but only one) but had NULL IMEI.
Wifi and Bluetooth works well, but there is no IMEI when i dial *#06# and imei is 0000000000. And Bonus is that the phone acts as Dual SIM, through it is only N930F single SIM. So the phone menu in HydraRom after dialing says 0000 for both IMEIs.
I tried to write IMEI with software IMEI changer via xposed, but it "writes" it only for the system instance.
Phone is still unable to find my carrier of connect to one.
When i tried to see device info with all softwares it says:
PDA Version: N930FXXU2BPJ8
Baseband Version: N930FXXU2BPI5
CSC Version: N930FOXM2BPI5
Please help me to restore EFS somehow, or at least to succesfully write IMEI and S/N (which i don´t really have) to phone and can connect to my network as before my idiosm I did with restoring ROM from "same" but different device.
Who will help me will get 30EUR from me (student) on his PayPal.

Did you tried stock firmware? If not flash N930FXXU3BPL2, and do wipe. https://forum.xda-developers.com/note-7/help/n930fxxu3bpl2-t3520988/page2

Hello!
I tried flashing oficial firmware, didn´t solve my problem, or something called COMBINATION Factory binary but this failed.
Radio and baseband is all OK, I have two other phones exactly with this firmwares and versions and they work all OK.
Problem is with EFS and CERT, before wrongly restoring this partion with TWRP backup from another NOTE 7 SM-N930F the phone worked all OK.
I managed to do with many softwares to write IMEI and S/N and it succeeded!
It is written in CERT file and not only with some IMEI changer for system run instance. It is readable via ADB.
Phone can unlock the SIM card but is unable to load carriers.
I read a lot of this problem and I compared CERT file of a backuped one and CERT on the restored one after my IMEI repair.
The CERT on the recovered one has it´s own IMEI now but has same ImeiSign,PubKey,PubKeySign as the backuped one from what I made restoration with TWRP.
So these codes are OK for the IMEI and S/N on the working one but they are inconert for the not working one because of encrypting.
I tried to flash CERT from the working one to bricked one but this does not work because of some CPID encrypting or so.
Have you please any solution to
1. Fully restore working EFS on the phone to work as before?
2. Try to make calculation for the right ImeiSign,PubKey,PubKeySign for that IMEI?

i have Samsung note 7 n930f
hey how u doing ?
i have Samsung note 7 n930f
and i have on it pie 9 SuperFast9 H5
on it but i have small issue
how to restore my s/n on my samsung sm- n930f
i got the phone with changed s/n
and want restore the original s/n