yashsingh1/xdaforums huggingface dataset:
[Galaxy Note 4 Original Android Development] Jouixs:
Hi all

Factory mode on ?

I have this problem.

When i install new Rom from kies POF1. Every thing is fine Network works ime check is ther np at all, it remember wifi pas ect. .

Then when i restart phone i get Factory mode on (screen whit red letters). Keyboard lags when i type a sms and Video recording lags and it dont remember wifi pas. but Network is fine 4g is ther. ime check is ther.

When i use Custom rom Factory mode is on (screen whit red letters). ime is fine but ther are nothing in the EFS folder to edit.

When i use CM 12.1 No factory mode.

Question: is it possible to fix ?

The phone is fine iff i never restart it and never run emty on batteri hehe ;-/ and dont use Custom roms. :(

Regard Jouixs
[Galaxy Note 4 Original Android Development] xDiRECT:
hello,

anyone has an efs backup .img or .tar for n910v? its urgent.

thanks in advance
[Galaxy Note 4 Original Android Development] dr.ketan:
It's unique for every device. If someone share his/her backup then both device will be banned so why someone like to give it?

If we can share it then why on earth we need efs backup Tool
[Galaxy Note 4 Original Android Development] xDiRECT:
first of all i'm not in usa, i know efs is unique, my device has efs corrupted it continuously rebooting while optimizing apps i cant turn on usb debugging or diag port, bootloader locked, can't downgrade to kitkat, i need an efs backup to be able to boot the device normally.
[Galaxy Note 4 Original Android Development] coolman10113:
Unable to make any call or texts, but data is working

Prior to texts and calls not working (also the fingerprints I had registered had suddenly stopped working), I LUCKILY made a backup using this tool and saved it to my PC. So after texts and calls stopped working, I used "EFS Professional" to restore my backup, which it said it completed successfully. I then rebooted my phone. I was relieved to find that my fingerprints was now working again, BUT calls and text are still not working at all. I am not sure what to do at this point. Any assistance would be greatly appreciated.

---------- Post added at 04:52 AM ---------- Previous post was at 04:01 AM ----------

First I flashed stock everything: Flashed the newest stock rom using odin (OG5), factory reset multiple times (Recovery and through settings).

Next (after it still didn't work) I went into settings and started messing around with the Self Device Activation ("Activate this phone" link in settings).

I clicked the three small dots in the upper right hand corner and selected "Reset Cellular Data". Phone then restarted.

Then immediately went back into Self Device Activation and it asked if I would like to Activate, (So I clicked YES!!!).

Dialog popped up that said "writing to device.." then it completed successfully. Device then rebooted (again).

Once it started back up more dialogs popped up saying "Updating PRL" and "Updating Profile."

After they completed, I went and tested my luck with a call and POOF, it worked!

Tested text messages and it worked as well.

I have no idea why this worked or what was "written to my device," but my phone is now working as expected and it saved me a trip to the Sprint store!

Thanks again to Dr.Ketan as your backup most likely allowed me to find the fix! :victory:
[Galaxy Note 4 Original Android Development] Joshua Mr PC Repair:
So I run this one 3 different times and still can't locate my EFS file do I need to be rooted ??

Sm-n910w8

XDA version 1.9

Just trying to Do A backup before I flash a rom ,

Pure stock so far

It says

File saved to /My EFS in intsd
[Galaxy Note 4 Original Android Development] winhhh:
^ Same here
[Galaxy Note 4 Original Android Development] dr.ketan:
Yes. This tool requires rooted device.
[Galaxy Note 4 Original Android Development] kanu1and:
Hi,

I am in India and have an unlocked t mobile 910T model... I backed up emei using the backup app... and installed another custom rom made for 910T.

Now phone is not detecting the signal and emei says null. I searched for the folder which gets created when emei is backed up using the app. I can not see it now.

Please suggest how can I fix this.
[Galaxy Note 4 Original Android Development] usmann_090:
My phone model is SM-910H.But after installing custom ROM my phone model changed to SM-910C.(SM-910C can be flashed on SM-910H)

Now,I should make backup for which model ?

I m newbie.

Thank you
[Galaxy Note 4 Original Android Development] dr.ketan:
SM-N910H (original)
[Galaxy Note 4 Original Android Development] usmann_090:
Thank You.

I wanna ask that if sometime I want to restore my that efs backup file.

How 'll I do it ?

Thank you
[Galaxy Note 4 Original Android Development] dr.ketan:
This tool is just for backup. Also explained in OP you can use DD command as this tool makes backup in generic form.

Pro version have both options.
[Galaxy Note 4 Original Android Development] usmann_090:
I have read that but I can't understand how to restore it by DD command.

Could u please help me.I m just curious.

Thank you.
[Galaxy Note 4 Original Android Development] dr.ketan:
App have link to efs info topic. Or search EFS info on xda i have explained in details.
[Galaxy Note 4 Original Android Development] bogdan_wrc:
i made the back up but cannot find the folder in which..INT SD?

this is ONLY for rooted users? i did not undertsand exactly..

and after back up..if you have IMEI NULL how can you recover the back up IMEI..also through this tool?
[Galaxy Note 4 Original Android Development] warwagon86:
doctor can you help please with pit file for n910g 32gb??
[Galaxy Note 4 Original Android Development] leyneli:
Must we root for this?
[Galaxy Note 4 Original Android Development] iicecube:
Okay, I got the pro version of imei tool for my note 4..

I did a backup in my internal drive and its had a big red FAILED, but its successful backup "buid.prop" into the drive as stated below statement..

(I even tried successful restored my note 4 as well)

Does this consider as a success backup even its have a failed?

---------- Post added at 11:42 PM ---------- Previous post was at 11:41 PM ----------

Yes you need a rooted mobile as EFS is in the system files..
[Galaxy Note 4 Original Android Development] dr.ketan:
Can you attach build.prop here which is available in MyEFS folder ? Don't attach any other efs related file in case it is there
[Galaxy Note 4 Original Android Development] kenoww:
Hi doc,

can u please pm me im willing to donate if my problem get fixed.

my imei and baseband is gone and i cant recover it.

I need personal help thanks alot.
[Galaxy Note 4 Original Android Development] mr backup:
I have the same problem. I restored my efs using the app, and I've been in a boot loop ever since. Tried everything in this thread. How to restore efs with only recovery /download mode?
[Galaxy Note 4 Original Android Development] sonic_lp:
Hello Dr Ketan!

So My phone is sm n910K

I have a problem. I have a backup of my EFS made when I was on android 4.4.4., but then I accidentally flashed my device with firmware sm n910S. I lost imei, showed a nul/nul and missing network. Then I flashed 5.1.1 and imei became correct, but network doesnt still work. I Got Root through stockrider Kernel v2.0. Then I wanted to restore EFS, but the network does not appear after restarting the phone. Rollback to 4.4.4 does not work I installed the version of android BOJ05 which the rollback is blocked. what should I do??

P.S. sorry for my poor english

Help who knows what to do
[Galaxy Note 4 Original Android Development] dr.ketan:
Updated to 2.0

ChangeLog :

1. New UI

2. Added support for system less root (supersu 2.60 +)

.
[Galaxy Note 4 Original Android Development] sid432@gmail.com:
Any help appreciated

Hi Doc,

I bought Samsung Galaxy Note 4 N910G from a local person. I do not know if the phone was rooted or downgraded before but I noticed the basedband/imei was unknown. I have downloaded 5.0.1 OS and flashed with ODIN but no luck. I read couple of forums and yours especially for EFS backup / restore. I rooted the phone with TWRP recovery and installed EFS Professional tool to backup and restore EFS but also no luck. I have been reading that in order to restore EFS folder, you supposedly had backed up this folder from earlier which is not the case for me. So now, I have this expensive phone which shows unknown baseband and null/null IMEI. What can I do now ? Is my phone is completely damaged?
[Galaxy Note 4 Original Android Development] dr.ketan:
If you have original bill then Samsung service station can fix it.
[Galaxy Note 4 Original Android Development] llv_j:
Help!!

Ok guys, i need help becz nobody helped me with this problem and nobody take it seriously, i install cm13 on my n910c and everything ok, after 2 builds i try to downgrade to another rom, to be spicific, sixperianc rom, it boot loop , i try every thing until i see a thread that say, install efs professional and backup efs and format it , i follow this thread and seccussfuly downgraded to sixpiroanc rom, but the thing is my imei lost and whene i try to restor it in to much apps and tools all give me a boot loop, so please if any one have a Solution please replay !!!

Btw cm13 is nice rom but not stable so i want to downgrade until stable build releassed.

Sorry for my bad english..
[Galaxy Note 4 Original Android Development] Alt34:
exact same problem... No repair shop can help me where I am btw. That's like I'm talking some kind of alien language to them. Now I'm with my Note 4, imei null/null, no efs backup possible and no solution but to sell my phone on ebay for pieces. If someone knows something about a solution, not so expensive, please, contact me, I'm kind of desperate
[Galaxy Note 4 Original Android Development] mtbiker19:
BACKUP NEED Note 4 N910F - No EFS Emei

Coud you send me a backup from your EFS for my phone? I coudnt buy it on PlayStore. :crying::crying::crying:

I will retype my IMEI from my phone of cause !!
[Galaxy Note 4 Original Android Development] vince.lupe:
[MENTION=3931450]dr.ketan[/MENTION], I love this tool and it's protection that it provides against losing your IMEI number and serial number - it's genius, simple to use, and its EFS folder layout is wonderful :D I have to ask you: now that Marshmallow 6.0.1 is out for the SM-N910C, is there a version that works for it? Have you updated the app? Thank you, man, very much :D
[Galaxy Note 4 Original Android Development] dr.ketan:
I have updated for systemless root last time should work fine on MM too. Let me know if any issue.
[Galaxy Note 4 Original Android Development] falio:
works on sm-n910c with android 6.0.1
[Galaxy Note 4 Original Android Development] android_htc:
[MENTION=3931450]dr.ketan[/MENTION] hope you can help...

I've restored an old efs backup using your backup tool, and now the phone is constantly rebooting/boot looping, sometimes it goes to app optimisation screen and then reboots again. I've done this whilst on 6.0.1 and restored possibly wrong efs backup from my note 2 or an old version of note 4 N910F 5.1.1.

I've tried to odin back to stock with no luck (both 5.1.1 and 6.0.1). Note that for some reason system status now always shows as custom even after odin restore.

Is there any to to restore old note 4 efs backup via twrp or adb please as I can't do it via the backup tool?

Many thanks for your help
[Galaxy Note 4 Original Android Development] dr.ketan:
Which Tool you have used to restore? Give me exact app name and version
[Galaxy Note 4 Original Android Development] android_htc:
Thanks for your reply.

I used the paid version of "IMEI TOOL SAMSUNG Note4": https://play.google.com/store/apps/details?id=com.yahoo.dr.ketan.efsnsgn4pro

And I have a couple of backups that I made whilst on 5.1.1 which contain the following files:

build.prop

efs.img.ext4

mdm1m9kefs1.bin

mdm1m9kefs2.bin

mdm1m9kefsc.bin

Please advise.
[Galaxy Note 4 Original Android Development] dr.ketan:
Attach build.prop file (don't attach any other files) here which is present in MyEFS folder
[Galaxy Note 4 Original Android Development] android_htc:
Please see attached.
[Galaxy Note 4 Original Android Development] dr.ketan:
Flash this version of stock ROM

N910FXXU1COL3 and while you reboot to recovery does this giving error unable to mount efs or something like it?
[Galaxy Note 4 Original Android Development] android_htc:
Note that I am not sure which efs version I restored. But, I've flashed several stock versions including marshmallow and I've not seen any efs errors... maybe one message about drk folder and dm-verity verification failed. But, phone is constantly rebooting even when there is no errors in recovery and system status always shows custom after odin flash. I will try the version you suggested later today.

Thanks
[Galaxy Note 4 Original Android Development] dr.ketan:
Once can you try flashing twrp and then beta supersu zip?
[Galaxy Note 4 Original Android Development] android_htc:
[MENTION=3931450]dr.ketan[/MENTION], I have now tried various stock roms, including the one you suggested. Note that for some N910F stock roms, I had to use the pit file to successfully flash via odin. Unfortunately, phone is still constantly rebooting.. after odin back to stock rom (no errors in recovery, apart from system status showing custom and not official after odin). After factory reset via stock recovery, phone would start optimising apps then reboot, and restart optimising app again.. and finally, it would just keep rebooting. I have also installed latest twrp and latest beta, result is the same.

Any other suggestions please?

Also, I cannot see the efs folder via twrp file manager, is this normal?

Is there any way to restore efs files made by your backup tool from twrp?

I have now lost hope, as warranty is void due to tripped knox. Any further suggestions would be greatly appreciated.
[Galaxy Note 4 Original Android Development] dr.ketan:
I will do something tonight. Wait
[Galaxy Note 4 Original Android Development] dr.ketan:
If still you have error and if you can trust send me your MyEFS folder on my inbox (don't publish on public forum)
[Galaxy Note 4 Original Android Development] android_htc:
Thanks for your continuous support. I will send it this evening.
[Galaxy Note 4 Original Android Development] Hellz92:
[MENTION=3931450]dr.ketan[/MENTION], Due to stupidity i never made a backup of the EFS after rooting my Note 4 on 5.0.1. Now i'm using BLISS rom 6.0.1 but my IMEI still seems correct, when i dial *#06# i get an IMEI number that doesn't start with 0049**, but with 356****. I can also still connect to the phone network. Can i sitll make a legit EFS back-up using this tool, or am i too late for it now?
[Galaxy Note 4 Original Android Development] dr.ketan:
Where you read it should start with 0049? indeed when it start with 0049 - it is corrupted. Starting with 356 is seems correct and you can compare with same on box/bill. And yes make backup first.
[Galaxy Note 4 Original Android Development] Hellz92:
yeah, it starts with 356, so it is not corrupted. It is stil safe to make a back-up now while i'm in a custom rom (Bliss rom 6.0.1)?

Edit: IMEI is the same as on the box.
[Galaxy Note 4 Original Android Development] ware84:
im having a similar problem keep getting that error no matter which stock rom i odin i can still use my phone connect to network make phone calls etc. but the phone is laggy freezes up is there a simple fix for this kinda problem i just flash the stock 6.0.1 which i was on this morning and it didnt fix it
[Galaxy Note 4 Original Android Development] lorilucille9:
Is the Doctor in? I need help if you can spare time? I have a N910V and some how I messed it up to where it throws the dm-verity verification and E:/failed to mount /efs (invalid argument) messages when in recovery. I have network capability and it looks like BT and WiFi is ok too. My IMEI reads correct when in the about phone/status menu but my ICCID is not correct. I previously had an unlocked the LP bootloader and then the MM bootloader as well and flashed Noble rom and ran it for a week till I started getting constant error messages. I odined back to official MM firmware and have had this trouble with the messages in recovery since. At one point I was getting the DT ignite failed message too while the phone was on running. I had backed up my efs folder in TWRP but it won't restore plus it was when I was on a MM rom. I am now back on LP... any thoughts on how I can fix this? All help greatly appreciated too!!!

EDIT: I take that back... my ICCID matches my SIM card. I was looking at the original box sticker the phone came in which lists a different ICCID number.
[Galaxy Note 4 Original Android Development] a_s_a_o:
Hello dr.ketan

I have this problem, i Have samsung note 4 sprint version n910p i flashed stock rom by oden android marshmallow 6.0 i found the system very slow and when i open EFS file i found it is empty no file on it , :(

i tray the apk file you add but not open in my phone also i don't found FactoryApp/keystr

how can i back this file to my phone working normal

thank you for your help
[Galaxy Note 4 Original Android Development] farroo:
My Device Note 4 SM-N910S. I was on MIUI8 ROM based on MM 6.0.1 on this device. Someone encouraged my to try another ROM which was made for N910C. It didn't flashed well and ended up in boot loop. I pulled out the battery and restore the previous backup. Now Sim card is not working on this device. dialling *#06# shows correct IMEI. Its my utmost hard luck that I couldn't come across this post so i could have make a back up of Base-bands Etc. This device is my daily usage driver. Now I would hugely appreciate any help to get SIM Card working. please do help me.

thanks
[Galaxy Note 4 Original Android Development] TatsuyaKaneki2015:
Sir ive been reading your post. But can u suggest me what to do with my phone coz ive been trying a lot of things to restore my original imei. im so clumsy flashing a new firmware without having a backup my efs file. recently i have found out about this thread but its too late. i lost my original imei. I also tried to find the original firmware hoping it would fix it but still the same. i think its becoz i flashed an old firmware thats why i lost it. what to do?
[Galaxy Note 4 Original Android Development] kiranssmail:
i have my efs backup but i can't restore

Hi good day sir

My isssue is i had backup my efs using xda version of your app on note 4 n910c model

Then i install DN7 rom ,my imei is lost so i decided to restore

I bought the paid verison from google and open it gave su permission

But at bottom of screen it says super su - setting - enable mount namespace separation - to use this app

I have already enabled it in super su and still it show it

It does not restore the my efs

What i do now , i have my efs file

Thanks in advance
[Galaxy Note 4 Original Android Development] dr.ketan:
May be issue other than efs itself. Sometimes old modems can cause it

Flash stock ROM and see.
[Galaxy Note 4 Original Android Development] dr.ketan:
Important keep efs backup at safe place in multiple copies. That warning is just reminder, ignore it. Also try with and without namespace separation. But likely issue will be other.

Let me know how it goes with stock rom
[Galaxy Note 4 Original Android Development] kiranssmail:
i have done that too still problem is persist

May be issue other than efs itself. Sometimes old modems can cause it

Flash stock ROM and see.[/QUOTE]

---------- Post added at 12:30 PM ---------- Previous post was at 12:20 PM ----------

Alternate method to restore efs folder

---------- Post added at 01:00 PM ---------- Previous post was at 12:30 PM ----------

Aftet several attempts with and without mount name space separation.Finally it restored my efs

It took a day

Thank you Dr.ketan for your great tool
[Galaxy Note 4 Original Android Development] dr.ketan:
Before trying anything, better flash latest stock rom with odin. That will rule out if any other issue.
[Galaxy Note 4 Original Android Development] dr.ketan:
Glad to know.
[Galaxy Note 4 Original Android Development] lonelyw:
Hi dr.ketan ,

I replaced the faulty motherboard of N910F, I bought the play store version made a backup of efs before the motherboard stopped working, I replaced it with a factory motherboard without IMEI, installed a stock ROM, rooted it, restored efs with your app but I get unknown IMEI, wifi, and Bluetooth work but unable to use phone for calls.

If you want I can send you the backup files.

thanks
[Galaxy Note 4 Original Android Development] dr.ketan:
Do you mean efs backup of X motherboard restored on New motherboard?
[Galaxy Note 4 Original Android Development] lonelyw:
yes

Thanks for the reply

---------- Post added at 01:36 AM ---------- Previous post was at 01:26 AM ----------

the new motherboard I bought is a Factory New Motherboard without IMEI

.

I will donate to you if you help me please.

Thanks
[Galaxy Note 4 Original Android Development] dr.ketan:
Then it won't work because new motherboard should come with new IMEI. Contact samsung service center and ask them to register new IMEI as it has to provide with new MoBo
[Galaxy Note 4 Original Android Development] lonelyw:
The motherboard came without IMEI number , here is the description of the seller on ebay """This is an original part. Why buy a new device when your device breaks? Just replace the broken part.

Fits: Samsung N910F Galaxy Note 4

This is a Replacement Motherboard / Swap Board

Please Note: This is a Factory New PCB Motherboard without an IMEI Number! ""

I also went to Samsung service center, they did not help me resolve issue because I did not buy the motherboard from them (the charge £250 !!!)

thanks

---------- Post added at 11:41 AM ---------- Previous post was at 10:57 AM ----------

Is It not possible to restore only the IMEI number through your app?, as the new motherboard comes without IMEI number.

If not then I have to bin my phone as I spent too much on it to repair.

thanks for your help
[Galaxy Note 4 Original Android Development] serge808:
Yea it doesnt work for me getting the e failed

---------- Post added at 05:07 AM ---------- Previous post was at 04:55 AM ----------

How to you do the adb shell any instructions ?

---------- Post added at 05:11 AM ---------- Previous post was at 05:07 AM ----------

Already did fetting the e unablw to mount efs partion in red after reflashing newer firmware after defrade faild

---------- Post added at 05:12 AM ---------- Previous post was at 05:11 AM ----------

You dont tell us wgat to do if we already lost an efs or the its not mounting without current tools its impossible to fix.
[Galaxy Note 4 Original Android Development] droidzer1:
Restored EFS with this tool from a week ago and now the phone shuts down after a minute or two and won't reboot without pulling the battery. Does having a different SIM card in the phone since EFS backup cause this?

---------- Post added at 04:41 PM ---------- Previous post was at 04:37 PM ----------

Guess that's not it either - it shuts down even without a SIM card in it. Phone was stable before this :(

---------- Post added at 05:03 PM ---------- Previous post was at 04:41 PM ----------

I guess it may have been the way I was touching the 'Restore' button. I touched it once, it said to hold it down so I held down and didn't see anything, let up and held down longer. I think it might have hiccuped during that and did a second or partial restore. Got into it fast on a reboot knowing I only had a minute or so before it shutdown and fortunately got a restore done again which now seems stable.
[Galaxy Note 4 Original Android Development] radz_:
deleted
[Galaxy Note 4 Original Android Development] Xuanden74:
chưa có tool backup imei

chưa có tool backup imei cho N910V ?:bối rối:
[Galaxy Note 4 Original Android Development] folusmile:
Pls help Dr. I backup my original efs,modem via trwp before installing note7port for my 910f after months I got no IMEI and unknown baseband ,now phone keeps rebooting. I restored the backup via trwp still same thing phone still keep rebooting. No IMEI and unknown baseband,Pls help.
[Galaxy Note 4 Original Android Development] xbreakx:
Can I change the IMEI number for N915F?