im trying since few weeks to root or just wright that f***** numbers in my system, i flashed new software and new bootloader but cant register my umidigi f1 play, nothing works i tried nearly every manual/way ive found on the internet. it would be nice if someone spend some hours and do this with teamviewer for me or just create a system image with all my imeis, meid and android seal ... sn write tool always fail, flash twrp or adb debug didnt worked. maybe its the phone or im just not intelligent enough :ß pictures are at my profile ^^
@P41Nkiller
On each Android phone exists the EFS partition where all your important data like the IMEI number, MAC address of all the wireless devices, important files from the internet and product code, MEID, and ESN, registered phone number, etc. are stored.
Flashing a new ROM shouldn't have touched EFS partition.
Related
Hello all SGS3 users.
I have a strong issue on my branded Samsung I9300. When I browse the /efs folder (with Root Explorer for example), I notice a strange thing.
Two files are changed every hour (the date and the time). Revelant files are : nv_data.bin & nv_data.bin.md5
I know it's important files (including IMEI number and other important information). I have already make backup.
I said that my phone work properly with the right IMEI number, but I'm afraid to turn off my phone not to stop writing files.
Have you ever heard of this ?
Note : I use I9300XXBLG8/I9300OXABLG8 PDA/CSC. I have try to unlock my phone with Voodoo unlocker (thanks supercurio) with previous firmware. When I upgrade my phone to LG8 (and loose my unsimlock), I haven't try to fix Voodoo issue. I have the same network provider as the phone.
Note 2 : I'm sorry for my bad skill in english
just check on mine and it seems to do the same thing
It should come from the new samsung "feature" that make voodoo unlock useless for now
Do not be worry: I have turned my phone off a few times since I flashed LG8 without issue
Thank you for your reply.
If I can restard my phone without issue, it's a good news.
Can you just watch what happens in "nv.log". In my case, no record about it.
same thing: not listed in nv.log
I have upgrade my modem OTA (with the LH1 available today).
It does change this issue.
Others are in this situation ? (I think of guys who don't have try unlock their phones with software hacks)
lelinuxien52 said:
Hello all SGS3 users.
I have a strong issue on my branded Samsung I9300. When I browse the /efs folder (with Root Explorer for example), I notice a strange thing.
Two files are changed every hour (the date and the time). Revelant files are : nv_data.bin & nv_data.bin.md5
I know it's important files (including IMEI number and other important information). I have already make backup.
I said that my phone work properly with the right IMEI number, but I'm afraid to turn off my phone not to stop writing files.
Have you ever heard of this ?
Note : I use I9300XXBLG8/I9300OXABLG8 PDA/CSC. I have try to unlock my phone with Voodoo unlocker (thanks supercurio) with previous firmware. When I upgrade my phone to LG8 (and loose my unsimlock), I haven't try to fix Voodoo issue. I have the same network provider as the phone.
Note 2 : I'm sorry for my bad skill in english
Click to expand...
Click to collapse
As you have already stated in your post EFS folder contains important information such as IMEI number, Phone number and other details...the nv_data.bin file changes it size as the time passes... it is a known behaviour and is not a bug..backup your efs partition on to external medium and restore when required...
read this post.
http://forum.xda-developers.com/showthread.php?t=1314719
zoot1 said:
As you have already stated in your post EFS folder contains important information such as IMEI number, Phone number and other details...the nv_data.bin file changes it size as the time passes... it is a known behaviour and is not a bug..backup your efs partition on to external medium and restore when required...
read this post.
http://forum.xda-developers.com/showthread.php?t=1314719
Click to expand...
Click to collapse
Thanks for your answer. I have already make backup with Toolkit v4.0 and EFS Pro 1.8.
Dear friends.... is someone able to send me, or load somewhere, a copy or your Ulefone Be Pro NVRAM.BIN....I'm not sure it can help but could be useful because flashing a ROM I selected "format all" and now I've lost the NVRAM hidden partition where the IMEI codes and other important stuffs reside :crying:
I've alredy tried any existing system to write back the IMEI codes; using engineering mode AT command the phone answer me "the command is not allowed in userbuild" ...I don't really know what it means, the phone is rooted.... using MTKDroidTools I cannot see anything in the IMEI area so I cannot restore/backup IMIEI's....tried with SN Write Station tool, nothing....Maui META 3G ver 6.1316.1, nothing.....IMEI&SN Writer, nothing....
At the end could be that they don't work because the NVRAM partition has been lost....but I'm not so expert.
My actual solution is: copy the NVRAM folder, fortunately I've made a backup before, under /data/... and it works.... but the phone MUST be rooted and every time I make a full wipe, I lose everything.... any suggestions?!?
I need exactly same NVDATA.IMG, but for Ulefone power 2 , anyone can share it with me please
I have IMEI, MAC ... but SIM cant be registered to network and nearly all sensors does not work ...
Hello,
after reflashing from android to ubuntu touch, the sim cards were unable to register to the network. Searching I noticed that IMEI numbers were not set. In android there is the engineer mode where someone can set these by getting there.
Is there any way to do it in ubuntu touch, even if I have to edit system files?
thank you.
We are not able to give you information on how to restore IMEI numbers to a handset, as it can be used for nefarious purposes. At least, that was the explanation that I've seen a lot.
Ok. So here's the deal:
My SGS3 I9300 exynos phone did the famous IMEI 0049 and SN null trick.
I cannot say what precipitated it but is simply stopped registering on the network, so no calling or data. All other functions operational.
After much searching and reading, I settled on flashing the stock 4.3 back. This succeeded only in doing absolutely nothing to alleviate this issue. I wiped the entire phone. Maybe I missed a critical section wipe, but since the stock ROM overwrites all? the CSC/BL/MODEM functions I thought it would set the default for EFS (which I believe is where these critical data live). I'm not a programmer so I cannot say diddly about the architecture and interrelationship of OS files, but I am technical and I know how SW and HW does what it does.
This phone is my own and I have all the rights to it.
I had loaded RRemix ROM a loong while ago and it was functioning fine. Probably a corruption of the EFS due to battery contact being loose. This is in my mind the most likely cause as the system may be accessing the EFS files, say making a call, or accessing data, and the power drops out and voila! Corruption. But again this is theoretical.
Needless to say I tried the usual hocus-pocus out there with no avail.
Getting to understand the system better it seems obvious that these critical identification numbers are hard-coded into the chips on the phone. Which explains the ability to 'fix' them with JTAG and other cable/box solutions and SW. However, I cannot see how the SW loses the ability to read the IMEI/SN that is hard-coded (fused?) into the main-board.
All my research pointed to the EFS files having something to do with this.
Way back when I loaded the custom ROM I did not come across the 'backup your EFS' as a necessary step, so I had nothing to go back on.
And loading the stock 4.3 ROM back on and not having that fix the issue, led me to believe something else was up.
Somewhere in the guts of this phone something is screwing up the layer between reading the registers where the numbers sit and the software layer that reports the numbers.
So, much searching led to the nv_data.bin file being a key component in all this fiasco.
Now, before I say any more, I believe that describing the next steps could be a big no-no here.
Now, understand, all I want to do is get MY personal device working again. I have the SN and IMEI numbers on the physical device.
Sure, I could have stolen it and am attempting to change these to avoid prosecution. Anyone can say anything online.
Therefore, before I can proceed, I need advice from moderators and VPP to either say 'Yes you may post this info' or 'No. Go away'.
Am I allowed to do the following:
1) Describe how I restored my IMEI (Not changed, overwritten, or subverted to my limited knowledge)
2) In the case of 1 not allowed, post the link to where I found the info to achieve this.
3) Submit the 'fix' to a moderator or developer to check whether this is indeed and restoration or a change.
If it's a restoration of existing functionality, I cannot see how this could be a problem. If its changing something, then it's a whole other sack of ferrets.
My reasons for posting are that xdadevelopers has given me years of joy with my SG devices. (Yes, I have the whole range exclusively) Many ROMS, customs, fixes, hints and saves deserves something back, and the difficulty in achieving this particular fix, warrants it.
But I don't want to break any rules, this being my first post.
So, please let me know what I can do to help others stuck in this position...
You can find it if you have the correct search parameters. Perhaps I can say that instead?
Thanks.
And thanks to all who have helped over the years.
T
[Edit] Just to clarify, the solution requires no special HW or 'boxes'. You do need root, however, and a hex editor. I had a reply explaining the use of Octoplus, which requires credits and registration. You will need none of those.
I can't speak English but I will try.
1- flash stock firmware.
2- root your device s3 .
3-in the web download " octuplus crack box"
4-in youtube see how install " octuplus crack"
5- before install stop your antivirus PC
6- open octuplus and connecte your phone with PC
7- chose your device i9300 .
8 click repair imie
9 click read info and do what OCTU said to do.
10- click repair or write the true imie in your device ( remove battery to see)and click repair.
11- restart phone .
12- see: call work fine
13- in phone go to mobile network\ access point names\ apn's
14- write your network.
TrinityTrip54 said:
Ok. So here's the deal:
Repair is ok Change or Modding is now:good::good::good:
Click to expand...
Click to collapse
How to restore corrupted or null 0049 IMEI on SGS3.
Right.
Thanks to the moderators for agreeing to let me share the solution. :good:
Thanks to the reddit poster who found this solution. I don't know how the hell you figured this out, but big-ups to you. For privacy I will not mention names or addresses.
You do need a rooted phone and I cannot assist anyone without root as I have not tried it.
Whether this only works to restore a corrupt IMEI or change it, I cannot say, but it managed to restore my existing one.
Preparation: Get your IMEI number from under your battery compartment. Say your IMEI no. is: 123456789101213, write/type it in the following fashion: 1 23 45 67 89 10 12 13
Now some funky transposition: Excluding the first number, transpose the subsequent pairs of numbers so that you have: 1 32 54 76 98 01 21 31. Can you see it? Swap 23 to get 32. 45 to get 54 and so on.
Now add 08 to the beginning and add A after the 1 so that the completed number is: 08 1A 32 54 76 98 01 21 31
Now you will need:
Rooted Galaxy S3 (This may work for all android devices that have an EFS folder. If anyone can confirm that would help others.)
Hex editor (PC based or Android app) - PC is faster and easier. I used hex workshop trial version but I'm sure any editor will do. I used the default install configuration.
USB Data cable (if using PC editor mentioned above)
You should probably back up the EFS folder entirely, just to be sure.
Using your favorite root explorer browse to root/EFS folder and copy the nv_data.bin file to an accessible area in sdcard. I use a /sdcard/Downloads folder.
Either open the file with your hex editor app or transfer the file to PC where you can open it with your hex editor program.
Open the file and jump to address 00550.
Now, get your modified IMEI number from the prep steps above and enter the values in the ASCII TEXT window to the right, NOT the HEX values window to the left. This may be different for other editors but hex workshop works like this.
Double check your address and entered data. When satisfied, save the file and transfer back to the phone if copied to PC.
Now, place the phone in Airplane mode, turning off the cell radios.
Go to the EFS folder and rename the original nv_data.bin file to something else. I used nv_databak.bin.
Copy the modified nv-data file into the EFS folder.
Turn off Airplane mode and do a full reboot.
Your IMEI number should be restored and cellular functions should work.
My previously garbled serial number was also restored.
I hope this works for you. I have no knowledge of any other method as I did not delve further into trying other numbers or such. I can't assist any more other than further clarifying the steps above if you don't understand something.
If anyone can decipher what is going on here, I would love to hear about it. I suspect something between the HW and SW layers is getting garbled or corrupted and this kick starts the process to get the correct data again.
Maybe.
May also contain nuts.
Hastalavista.
T
THANKS FOR POSTING THIS HERE!
I have this Samsung Galaxy S3 that I bricked 4 years ago and never wanted to sell it or even try to give it away. I searched for months for a frekin solution to this problem. Yesterday night i decided i wanted to try and install custom roms on it and so i wanted to give another shot at this stupid issue i had with the lost IMEI before doing so...and BAM! Today it's fixed!
I'm so thankfull I wanted to post here so that you know that you helped at least one person with this
Thanks a bunch!
@TrinityTrip54
Hi,
can you confirm that this is a permantent solution and remains when flashing new (custom) ROMs? Or is it just for the current installed ROM?
And I am having an issue with "jump to address 00550" in Hex Workshop. There is no address like this, just 540 and the next one is already 558. When inserting 00550 in the goto search field of Hex Workshop it jumps to 210. Any idea?
thanks anyway.
bert
Hello everyone, I am trying to edit my efs1.emmc.win due to a problem I am having with my Moto g6 plus regarding my IMEI, which appears as 0
I have two backups from my efs, in the first one my signals (wifi/data) just drop every 10 seconds and in the second one the wifi is stable but there is no IMEI.
When I put the file on a hex editor there is nothing making sense (not even my IMEI in the one that has it) except from the first line that says IMGEFS1
I would really appreciate it if anyone could help me with this problem
Thanks in advance