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Hi, can someone guide me as to how I can restore my lost IMEI - Serial No back to stock? using SM-G920FD (duos)
Kindly refer below to the details of my problem and actions done.
How the issue happened
1. I'm currently on stock firmware of SM-G920FD (COH8). (Local copy of COH8 flashed via ODIN)
2. I received an OTA update (COI9) and installed it. Phone works perfectly fine.
3. After doing some tests on some kernel (arters97's kernels), I have decided to revert back to stock firmware since the kernel uses Note 5 gpu driver (not knowing that someone has prepared a flashable zip for S6 flat/edge) :crying:
4. I use my local copy of COH8 and flashed via ODIN. The flash failed thru sboot.bin - that tells me the bootloader is outdated on my phone *ugh.
5. I downloaded COI9 firmware from samfirmware site and flashed it via odin.
6. It is now stucked at first samsung logo. After going to recovery it says cannot mount /efs
Fixes I made
1. I dont know much stuff with efs thingy, that's why I didn't do a backup for it.
2. First fix, (this is the worst step I ever made - that costs me into this big trouble) I installed a "something" application that requires me to format the efs partition. Well done to myself, the app successfully wipe it all without backing up efs .
3. Now the phone is stucked to samsung first logo. Period. Even Reflashing stock via odin failed. Realizing the efs files are all messed up.
4. Now, after searching thru forums, Ive come into this adb command by running this, .
/system/xbin/su
mke2fs /dev/block/sda3
mount -t ext4 /dev/block/sda3
After doing this, Ive been able boot into device, I have a working WIFI, a valid ip address.
a. no bluetooth address
b. no imei for both sim 1 and sim 2
c. Incorrect Serial Number
d. No network of course
After deep searching thru xda, Ive come across with nv_data.bin editing thru Hex Editor. It could probably return my IMEI and Serial No back to normal(i still have the imei no & serial at the back of my phone ).
Perhaps, the only way to fix this will be on a repair shop to fix my imei. I doubt my samsung warranty would help since Im constantly flashing stuffs on my phone.
Can someone share me their full EFS folder zipped with Galaxy S6 SM-G920FD / G920F (probably a single sim will do) so I could compare and edit my own imei that would be a great help and I'll give a feedback asap.
Hoping someone can help me on this. Thank you
Anyone?
37 views of galaxy s6 owner and no one dares to share their efs
There is loads of information on the forums to recover lost IMEI. Did you try flashing a modem and bootloader update. This should generate the efs folder with nv_data.bin. You still may not have the correct IMEI and serial in the nv_data.bin, but at least you can edit it.
Search the forums I have seen loads and loads of tutorials for this problem.
Not many people are quick to give out there IMEI.
bahmonkeys said:
There is loads of information on the forums to recover lost IMEI. Did you try flashing a modem and bootloader update. This should generate the efs folder with nv_data.bin. You still may not have the correct IMEI and serial in the nv_data.bin, but at least you can edit it.
Search the forums I have seen loads and loads of tutorials for this problem.
Not many people are quick to give out there IMEI.
Click to expand...
Click to collapse
No, modem and bootloader flashing does nothing.
I do already have a pre-generated-stock nv_data.bin from my efs folder.
Can you give me an example of a working thread that requires editing of nv_data via editor that works?
The problem is that their issue has worked specifically on their device, none of the Galaxy S6 users were able to do that afaik. Almost a week since i started searching for answers but to no avail.
For example this, the thread below says that I should goto this address [offset] 00188008 but in my Galaxy S6 nv_data.bin, the file is only up to 000FFFF0 offset?? That's why I need help from others to at least share their fixes or comparison of this thread below with their nv_data.bin file. If there is similarity. Forget sharing your imei to me, but maybe you can consider how am I supposed to do that fix on the other thread.
Thanks
http://forum.xda-developers.com/showthread.php?t=881162
Or if someone can find their IMEI code in nv_data.bin, kindly share to me the offset (location) of the IMEI in hex editor. That would be a good start. Thanks
batuzai04123 said:
No, modem and bootloader flashing does nothing.
I do already have a pre-generated-stock nv_data.bin from my efs folder.
Can you give me an example of a working thread that requires editing of nv_data via editor that works?
The problem is that their issue has worked specifically on their device, none of the Galaxy S6 users were able to do that afaik. Almost a week since i started searching for answers but to no avail.
For example this, the thread below says that I should goto this address [offset] 00188008 but in my Galaxy S6 nv_data.bin, the file is only up to 000FFFF0 offset?? That's why I need help from others to at least share their fixes or comparison of this thread below with their nv_data.bin file. If there is similarity. Forget sharing your imei to me, but maybe you can consider how am I supposed to do that fix on the other thread.
Thanks
http://forum.xda-developers.com/showthread.php?t=881162
Click to expand...
Click to collapse
I can't remember exactly the offset location but I have seen it on my phone a few weeks back. I do remember seeing a few tutorials on YouTube. I will take a look tomorrow and if you haven't it solved by then I will help you fix it....
Thanks, hoping you could help me on that.
Something is weird on how efs is generated. I backed up the messed up nv data from efs folder. Then I deleted the contents of whole efs folder then reboot.
When phone booted, to my surprise I notice that it still generated the contents of efs. Then I compared the Newly generated nv_data to my backedup nv_data. No difference -_-. Still incorrect imei was given to me. 350000000000006 format both for sim 1 and sim 2.
Phone Info app says that my imei info (www.imei.info) was from an apple device rofl.
Since its giving me same and same imei and no product code/serial code
I suspect that my IMEI was generated from embedded hardware/chip??? But i think its not possible to mess any of the hardwareparts from flashing custom roms/zips/stock firmwares alone?
Hmm I think there's no chance for it to recover? since it is always giving me Generic Imei
One user says that it could be the hardware is somewhat corrupted or cant be modified blah blah
http://forum.xda-developers.com/showpost.php?p=30292696&postcount=185
Forget the EFS
Forget the NV
〔You should try to write cert〕!!!!!!!
Only in this way your phone will be working properly
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---------- Post added at 12:41 PM ---------- Previous post was at 12:39 PM ----------
batuzai04123 said:
Anyone?
37 views of galaxy s6 owner and no one dares to share their efs
Click to expand...
Click to collapse
This is my modified IMEI case success
china chenli said:
Forget the EFS
Forget the NV
〔You should try to write cert〕!!!!!!!
Only in this way your phone will be working properly
---------- Post added at 12:41 PM ---------- Previous post was at 12:39 PM ----------
This is my modified IMEI case success
Click to expand...
Click to collapse
You showed your edited IMEI on your phone, but you didn't share how ?
I think this is what Im looking for, but HOW???
1. What is that cert file? Can it be installed via phones system files?
2. Does it need third party app and a toolbox hardware to buy and install? It smells like its for technician part already :|
3. Since it needs key cert, how can I generate this? Thru the 3rd party also?
But FYI, Im not into modifying IMEI as it illegal, what I wanted to do is to restore my device's IMEI found at the back of my phone.
batuzai04123 said:
I think this is what Im looking for, but HOW???
1. What is that cert file? Can it be found via phones system files?
2. Does it need third party app and a toolbox hardware?
3. Since it needs key cert, how can I generate this? Thru the 3rd party also?
But FYI, Im not into modifying IMEI as it illegal, what I wanted to do is to restore my device's IMEI found at the back of my phone.
Click to expand...
Click to collapse
You have now lost the IMEI
If you still have flash the firmware is invalid
I think no way to restore the original IMEI
If change IMEI is illegal in your country, it would be a sad thing
ugh. Based from your pictures, you used 3rd party hardware tool and app something like octopus box and the likes.
You're telling me to give this to technician, as it is the only way to fix my issue?
china chenli said:
You have now lost the IMEI
If you still have flash the firmware is invalid
I think no way to restore the original IMEI
If change IMEI is illegal in your country, it would be a sad thing
Click to expand...
Click to collapse
Perhaps were not on the same page
What I wanted to do is to change my IMEI to stock IMEI (printed on my phone) so that it can connect legally to my network provider. If your way is good, maybe you can help me how to change my IMEI
Changing IMEI i.e., frying someones IMEI to hacked/stolen/blocklisted phones are definitely illegal.
Back to my issue, did you send your phone to technician/ did you have the box tool to flash cert files to your phone?
Hope you can help me thanks
batuzai04123 said:
ugh. Based from your pictures, you used 3rd party hardware tool and app something like octopus box and the likes.
You're telling me to give this to technician, as it is the only way to fix my issue?
Click to expand...
Click to collapse
Yes the octopus can do it
------------------------------------------------------------------
My English really bad, I speak a little bit more simple
If you don't have a backup EFS and your mobile phone and lost IMEI.
The solution is to use the BOX to write a new IMEI so that you will get a new IMEI
You write a new IMEI may and other mobile phone to repeat After doing this You will forfeit the warranty In addition to Will not affect the normal use of your phone
Samsung CERT is unique And only CERT must be the truth
china chenli said:
Yes the octopus can do it
------------------------------------------------------------------
My English really bad, I speak a little bit more simple
If you don't have a backup EFS and your mobile phone and lost IMEI.
The solution is to use the BOX to write a new IMEI so that you will get a new IMEI
You write a new IMEI may and other mobile phone to repeat After doing this You will forfeit the warranty In addition to Will not affect the normal use of your phone
Samsung CERT is unique And only CERT must be the truth
Click to expand...
Click to collapse
I get it. But this cant be done without using the box tools? Am I right?
batuzai04123 said:
I get it. But this cant be done without using the box tools? Am I right?
Click to expand...
Click to collapse
Yes, you need a BOX and a clean CERT
Well still thank you for the replies, only repair via technician is the only way . Requesting for mod to close the thread. No way the imei can be reverted back via EFS - NV way, flashing stock modem, backing and restoring efs, mke2fs thingy, flashing stock firmware and so on.
There is part on the chip of the phone that literally erases the phone info for my s6.
If any can give other ways before I let go HAHAHA, but please refrain from efs,nv_data,flashing stock stuff, as the firmware doesn't have to do with restoring efs. Only the hardware device stores efs info for our phone.
batuzai04123 said:
Well still thank you for the replies, only repair via technician is the only way . Requesting for mod to close the thread. No way the imei can be reverted back via EFS - NV way, flashing stock modem, backing and restoring efs, mke2fs thingy, flashing stock firmware and so on.
There is part on the chip of the phone that literally erases the phone info for my s6.
If any can give other ways before I let go HAHAHA, but please refrain from efs,nv_data,flashing stuffs, as the firmware doesn't have to do with restoring efs. Only the hardware device stores efs info for our phone.
Click to expand...
Click to collapse
If your phone is KNOX 0 x0
Then you can look for samsung to solve for you
I wish you good luck, my friend
Thanks , haha but my knox is 0x1 already
Tried to bring it to a legit 3rd party technician and they assigned a new IMEI for my phone and its working fine now.
imo I brought it first to Samsung and tells me that my warranty is void, but they can fix it via hardware replacement and would cost me at around $350. Lol no way!!!
For those who tried to do anything when all methods do not work, frustrations etc. This is the quickest way to restore it.
But thanks for the info I got from XDA members, now Ive learned that the first rule should be applied whenever possible before its too late.
To all other Explorers/newbies/Risk taker out there. Remember this one word.
BACKUP!!!!
Thanks.
To Mod:
Requesting for mod to close this thread thank you
Well, it seems like I have "No service" on my phone, and it says that my IMEI number is 0, and my IMEI/SV is 01. I tried flashing stock rom onto this when it happened. I can't afford a new one and the only way I can keep this phone is if I can fix it - is there any way I can make an IMEI then find the folder to put this back into my phone? I have no backup, but I do have a folder called GSII_repair and it has 2 files, efs_save.tar and efs_save.tar.gz, but I'm not sure it is of any use. I just recognized the efs as the efs folder. I can't find where my IMEI is at the moment, either, so I don't know whether it is completely deleted or just corrupted. I also have a Moto G 3rd gen, I may be able to get an IMEI file from that, and then change the hexadecimals to fit my phone's original IMEI which is on my box. So please tell me, am I completely runined, and my phone is destroyed, or is there a chance that I can fix it? Thanks for any replies. Guys please help me though, I need it!
Reposted
http://forum.xda-developers.com/moto-x-style/help/help-one-replying-to-answers-d-please-t3482996
Thread closed
Hi,
I have a note 3 neo, 7505 and i updated the firmware. It was all working good for a week then i was listening to soundcloud to sleep and the phone restarted, since then the phone doesn't have an imei and says to insert sim card, and of course unknown modem..
Anyway, i created a backup of the efs using twrp, i have tried gazillion ways to restore the backup and gazillion manual ways too. Going to stock recovery... trying to copy manually the nvdata and all but it doesnt resolve. The files are placed there, i can see it in the shell but the thing just wont work!
i don't know how to proceed to this, i don't know if its a hardware fault, had it been that, shouldnt have i gotten the efs corrupted or some issue? could it be that the hardware itself is damaged all of a sudden? i dont think so, i pretty much think its the efs and yet i cant restore it?
should i attach my efs folder if someone can look through hex editor or logs to suggest a possible solution?
Thanks a lot and also i have search through and proceeded with many solutions and after that created a thread. hope someone can help.
P.S. I just noticed the serial number can be seen in phone status, so apparently its reading NVdata? or is it getting it from elsewhere? how to test if its a hardware fault?
penandweb said:
Hi,
I have a note 3 neo, 7505 and i updated the firmware. It was all working good for a week then i was listening to soundcloud to sleep and the phone restarted, since then the phone doesn't have an imei and says to insert sim card, and of course unknown modem..
Anyway, i created a backup of the efs using twrp, i have tried gazillion ways to restore the backup and gazillion manual ways too. Going to stock recovery... trying to copy manually the nvdata and all but it doesnt resolve. The files are placed there, i can see it in the shell but the thing just wont work!
i don't know how to proceed to this, i don't know if its a hardware fault, had it been that, shouldnt have i gotten the efs corrupted or some issue? could it be that the hardware itself is damaged all of a sudden? i dont think so, i pretty much think its the efs and yet i cant restore it?
should i attach my efs folder if someone can look through hex editor or logs to suggest a possible solution?
Thanks a lot and also i have search through and proceeded with many solutions and after that created a thread. hope someone can help.
P.S. I just noticed the serial number can be seen in phone status, so apparently its reading NVdata? or is it getting it from elsewhere? how to test if its a hardware fault?
Click to expand...
Click to collapse
The point is that TWRP creates faulty EFS backups on many devices which can't be restored properly.
There are different backup solutions (e.g. EFS Pro) confirmed working which may help you prevent future issues. I prefer the manual backup using adb shell or terminal emulator:
dd if=/dev/block/mmcblk0pXX of=/storage/SdCard/efs.img bs=4096
(XX needs to be replaced with the model specific partition number as they use different partition tables)
Restore:
dd if=/storage/SdCard/efs.img of=/dev/block/mmcblk0pXX bs=4096
thanks LS.xd, but i guess i have a pretty solid backup as i did create backup various ways, some were corrupt, but one that i working with has nvdata and every other file along with imei pretty intact....
i can open it up with winrar, and open the nvdata with hexeditor, i was wondering if i could confirm some way that the back up is actually 100% solid?
wondering if the partition's aren't aligned. I don't know for sure if EFS folder in the root directory is the same as being pointed by /mmcblkp03/platform/by-name/EFS ?
i mean they should be the same thing, its just a redirection right?
what should i be doing now? the baseband is unknown and the imei wont just work, waste the phone? or it could be done via some boxes or some other process?
there must be a starting point? isn't there some way i could use a generic imei and just any modem? then i could replace nvdata may be? right now, i'm installing various versions of stock firmware and repeatedly placing old efs data in various ways and i kind of turning hopeless. first i lost a nexus then i bought a g4 last month, gave me a bootloop just a week after, gone dead. then i bought the n3n and now this..... i mean 3 phones in a row..... i really hope this could work..
penandweb said:
there must be a starting point? isn't there some way i could use a generic imei and just any modem? then i could replace nvdata may be? right now, i'm installing various versions of stock firmware and repeatedly placing old efs data in various ways and i kind of turning hopeless. first i lost a nexus then i bought a g4 last month, gave me a bootloop just a week after, gone dead. then i bought the n3n and now this..... i mean 3 phones in a row..... i really hope this could work..
Click to expand...
Click to collapse
So you got some non TWRP made EFS backup, too? You can list your partitions using shell:
[email protected]:/ # cat /proc/emmc
You can use the dd command once you know the layout. Backups not generated manually may only be restored with the specific app/version and are probably not compatible using other restore methods. For my OnePlus 3 EFS backup can generated fine using TWRP but restoring it screws up the partition. Manually created image works fine. As I don't have a Note 3 Neo I don't know how it behaves for your device.
any idea how would i go on about inspecting the nvdata.bin? i'm in hex editor trying to see something resembling imei but its just so much garbage except a few lines.
i can't be sure whether its corrupt or not...
in efs -> imei -> a file called mps_code.dat i open it up in hex editor, and it has only 3 characters.....
is it possible i could initially use a generic imei and modem and later on populate it with actual somehow or just keep using generic one for now until i find a better solution, using hex editor or something...?
there are some tutorials on qualcom.. none for exynos but it should happen the same way, somewhere in nvdata, you place the imei ... and it would be generic method for most exynos devices...
i wish someone could guide me to that...
also can it be restored via "boxes"?
penandweb said:
any idea how would i go on about inspecting the nvdata.bin? i'm in hex editor trying to see something resembling imei but its just so much garbage except a few lines.
i can't be sure whether its corrupt or not...
in efs -> imei -> a file called mps_code.dat i open it up in hex editor, and it has only 3 characters.....
is it possible i could initially use a generic imei and modem and later on populate it with actual somehow or just keep using generic one for now until i find a better solution, using hex editor or something...?
there are some tutorials on qualcom.. none for exynos but it should happen the same way, somewhere in nvdata, you place the imei ... and it would be generic method for most exynos devices...
i wish someone could guide me to that...
also can it be restored via "boxes"?
Click to expand...
Click to collapse
After 3 years I had to retire my HTC One S. I flashed roms and firmwares up to 3-4 times a week without having any issues. One sunny day some update bricked then nvdata. I spent a bunch of hours trying to restore it in different ways, extracted data from stock firmware as well as using dumps from other user's phones, as some users reported this error fixed doing so. Even when the files was identical it just did not work for me. Changing the mainboard was the only possible solution so I decided to get a new device.
All I want to say is try to restore a valid backup in a way confirmed working. If you don't have a usable backup ask in your device's forum for somebody may upload it. Or spend 100 hours messing around with hex editors until you reach then point where you realize its cheaper to switch the device as wasting a year's holidays browsing the internet for some solution.
Hey everyone!
I have a Teclast M30 (MTK6797) tablet.
I updated it to the latest firmware with the flashing tool, and lost my IMEI and SIM card capabilities.
No baseband, IMEIs are null.
Things I tried:
- Restore NVRAM, NVCFG and NVDATA with the flashing tool, after editing the scatter file to make them downloadable.
- Used TONS of tools, like various versions of MauiMETA, ModemMETA, SN Write Tool, R&W tool, and others.
- Use MDDB & APDB files from other/older FW versions.
- Relocking the bootloader, just for kicks.
- Generating MP0B_001 file and placing it into the directory mentioned in a post here.
- Obviously, different SIM cards, to eliminate the possibility.
- Using the technician code in the dialer. The relevant option is not listed in the Communications tab.
Any suggestion is welcomed. I really have no idea what to do at this point, especially considering that the tablet is being used constantly due to the quarantine, and ordered a SIM card to allow family members to communicate via video where there's no WiFi.
Thank you and best health!
munky-head said:
Hey everyone!
I have a Teclast M30 (MTK6797) tablet.
I updated it to the latest firmware with the flashing tool, and lost my IMEI and SIM card capabilities.
No baseband, IMEIs are null.
Things I tried:
- Restore NVRAM, NVCFG and NVDATA with the flashing tool, after editing the scatter file to make them downloadable.
- Used TONS of tools, like various versions of MauiMETA, ModemMETA, SN Write Tool, R&W tool, and others.
- Use MDDB & APDB files from other/older FW versions.
- Relocking the bootloader, just for kicks.
- Generating MP0B_001 file and placing it into the directory mentioned in a post here.
- Obviously, different SIM cards, to eliminate the possibility.
- Using the technician code in the dialer. The relevant option is not listed in the Communications tab.
Any suggestion is welcomed. I really have no idea what to do at this point, especially considering that the tablet is being used constantly due to the quarantine, and ordered a SIM card to allow family members to communicate via video where there's no WiFi.
Thank you and best health!
Click to expand...
Click to collapse
Flash the stock firmware that you previously had on the device before you updated. It might restore your IMEI.
Other than that, as stated in the XDA forum rules, we can't help you retore your IMEI unless you made an IMEI backup before the issue started. You obviously didn't create an IMEI backup so we can't help you with restoring it.
Sent from my SM-S767VL using Tapatalk
Droidriven said:
Flash the stock firmware that you previously had on the device before you updated. It might restore your IMEI.
Other than that, as stated in the XDA forum rules, we can't help you retore your IMEI unless you made an IMEI backup before the issue started. You obviously didn't create an IMEI backup so we can't help you with restoring it.
Sent from my SM-S767VL using Tapatalk
Click to expand...
Click to collapse
Hey, thanks for replying.
The action I took was the update of the official firmware.
No, unfortunately I haven't backed up my IMEI partitions, not that even at this point - I know which partitions are these.
As I said, I have the number printed out on the box the device shipped in, therefore essentially I'm looking for help in restoring this partition.
I made several restores to the official firmware, new and old, but IMEI isn't being restored. Hoping there's an actual solution to this - we need this SIM for WhatsApp communication, keeping in touch with family at very restrictive times.
munky-head said:
Hey, thanks for replying.
The action I took was the update of the official firmware.
No, unfortunately I haven't backed up my IMEI partitions, not that even at this point - I know which partitions are these.
As I said, I have the number printed out on the box the device shipped in, therefore essentially I'm looking for help in restoring this partition.
I made several restores to the official firmware, new and old, but IMEI isn't being restored. Hoping there's an actual solution to this - we need this SIM for WhatsApp communication, keeping in touch with family at very restrictive times.
Click to expand...
Click to collapse
I understand your situation perfectly....
But...
That doesn't change anything about my reply.
As stated, the XDA rules only allow us to help with restoring from an IMEI backup. The reason for this is because anything that involves using a flashtool or other methods to rewrite your IMEI can be used, by others that might see it, for nefarious purposes, such as using the instructions that we might give as a means to change the IMEI on a stolen device or a blacklisted device in order to activate the device, which is illegal in a lot of places. Therefore, those kinds of discussions are not allowed here, regardless of your reason or your needs. This rule is in place to protect a potential user's privacy and device security.
Sorry, can't help you at all. Keep searching on your own in other places other than XDA.
Sent from my SM-S767VL using Tapatalk
Droidriven said:
I understand your situation perfectly....
But...
That doesn't change anything about my reply.
As stated, the XDA rules only allow us to help with restoring from an IMEI backup. The reason for this is because anything that involves using a flashtool or other methods to rewrite your IMEI can be used, by others that might see it, for nefarious purposes, such as using the instructions that we might give as a means to change the IMEI on a stolen device or a blacklisted device in order to activate the device, which is illegal in a lot of places. Therefore, those kinds of discussions are not allowed here. This rule is in place to protect a potential user's privacy and device security.
Sorry, can't help you at all. Keep searching on your own in other places other than XDA.
Sent from my SM-S767VL using Tapatalk
Click to expand...
Click to collapse
I understand, obviously it's not the case here, but I wouldn't want to break any rules.
I haven't found a solution in days, before arriving here to ask. So, if someone sees it and has an idea, I would appreciate help, even with PMs.
The main purpose of utilizing a SIM card at all is whatsapp, it's not like we're going out in the near future.
Contacted Teclast's support, which explained that the IMEI partition was wiped, and the tablet has to be shipped back for a reflashing.
This is impossible as we're in quarantine, and we use the tablet daily. So... if there aren't any suggestions - guess we'll stay on WiFi, w/o WhatsApp.
https://androidmtk.com/download-mobileuncle-apk
It's in the GPRS settings.
Use the third (oldest) is best into
But as you said, it's on the box, so it's no biggie.
Set, reboot.
Recently, I corrupted my /EFS partition when I tried to change my MAC address. I don't have any backups of the partition and now my wifi doesn't work. Basically, my last option is to flash someone else's /EFS and hope for the best. Can someone send me their TWRP backup of this partition? It would help a lot. Thank you.
DJsushi123 said:
Recently, I corrupted my /EFS partition when I tried to change my MAC address. I don't have any backups of the partition and now my wifi doesn't work. Basically, my last option is to flash someone else's /EFS and hope for the best. Can someone send me their TWRP backup of this partition? It would help a lot. Thank you.
Click to expand...
Click to collapse
You can't just use somebody else's EFS partition on your phone, as the data it holds is unique to each device. First, read what EFS actually is:
https://forum.xda-developers.com/oneplus-one/general/guide-efs-partitions-how-to-lost-t3307793
The only way (that I've found) of making your phone run properly again is to use a UMT dongle (do some research on how it works first) and input your IMEI back manually (it's written somewhere on the box the phone came in), but that dongle is a bit costly. If you do not want to deal with that, you should just reach out to OnePlus support.
I'm curious, why would you change your MAC address? Android 10 already has a MAC randomizer.
But yeah, EFS and Persist partitions are device specific and containing low level stuff that I don't think transferring it from one device to anther would work. First thing you could try is flashing stock ROM using MSM Download Tool.
McAwesomePL said:
You can't just use somebody else's EFS partition on your phone, as the data it holds is unique to each device. First, read what EFS actually is:
https://forum.xda-developers.com/oneplus-one/general/guide-efs-partitions-how-to-lost-t3307793
The only way (that I've found) of making your phone run properly again is to use a UMT dongle (do some research on how it works first) and input your IMEI back manually (it's written somewhere on the box the phone came in), but that dongle is a bit costly. If you do not want to deal with that, you should just reach out to OnePlus support.
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I read somewhere that it could work... And thanks, I know what the EFS partition is... However, is it a problem if I end up with someone else's IMEI? Also, I already did a backup of the current corrupted EFS so if the EFS from another phone won't work then I can just flash my old EFS back.
Also, my IMEI is intact. I haven't lost it. Only the MAC address is probably changed and that creates the problem. But I can't restore the original MAC address because the wlan0 interface doesn't show up in custom OS's. Only in OOS.
Edit: lol I actually already read the exact same article you've sent a link to.
freezingfox said:
I'm curious, why would you change your MAC address? Android 10 already has a MAC randomizer.
But yeah, EFS and Persist partitions are device specific and containing low level stuff that I don't think transferring it from one device to anther would work. First thing you could try is flashing stock ROM using MSM Download Tool.
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Click to collapse
Does it? I couldn't find it there... I know that OOS has a MAC randomizer but i don't know if other custom OS's have it. Also, could you please verify if i'm using the right tool? This is the link: https://forum.xda-developers.com/oneplus-6/how-to/tool-msmdownloadtool-v4-0-international-t3798892
Because it's OOS 5.1.5 and that's faaaar from the newest one...
DJsushi123 said:
Does it? I couldn't find it there... I know that OOS has a MAC randomizer but i don't know if other custom OS's have it. Also, could you please verify if i'm using the right tool? This is the link: https://forum.xda-developers.com/oneplus-6/how-to/tool-msmdownloadtool-v4-0-international-t3798892
Because it's OOS 5.1.5 and that's faaaar from the newest one...
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The latest one is here containing 10.3.5 https://forum.xda-developers.com/oneplus-6/how-to/op6-collection-unbrick-tools-t3914109
Android has had MAC randomisation since Oreo.