So I have Samsung Tab A6, I rooted it, and removed some bloatware, but then something went wrong and the tablet became inoperable. Not a problem, I took my daughter's tablet, exactly the same model, flashed TWRP on it, created a backup and then went to restore it onto the non-functioning tablet.
The restore didn't go as smoothly as I hoped, TWRP wasn't seeing the backup files on the SD card. After some digging I found out that I have to change the directory name where the back up was. Did that, and then I was able to restore the backup. The problem is that the tablet's serial number abd the MAC address now were identical to my daughter's tablet. I downloaded the factory image from sammobile, and flashed that via ODIN, still the wrong serial number and MAC address persist. I've tried wiping completely via TWRP, reflashing factory image via ODIN, checking "Nand erase" and "EFS clear" boxes, no luck, the wrong MAC address is still there. Can anyone give me an idea on how I can wipe any remnants of what was flashed before to start out with a truly blank device and to flash a factory image onto it.
Thank you in advance
krazyvladimir said:
So I have Samsung Tab A6, I rooted it, and removed some bloatware, but then something went wrong and the tablet became inoperable. Not a problem, I took my daughter's tablet, exactly the same model, flashed TWRP on it, created a backup and then went to restore it onto the non-functioning tablet.
The restore didn't go as smoothly as I hoped, TWRP wasn't seeing the backup files on the SD card. After some digging I found out that I have to change the directory name where the back up was. Did that, and then I was able to restore the backup. The problem is that the tablet's serial number abd the MAC address now were identical to my daughter's tablet. I downloaded the factory image from sammobile, and flashed that via ODIN, still the wrong serial number and MAC address persist. I've tried wiping completely via TWRP, reflashing factory image via ODIN, checking "Nand erase" and "EFS clear" boxes, no luck, the wrong MAC address is still there. Can anyone give me an idea on how I can wipe any remnants of what was flashed before to start out with a truly blank device and to flash a factory image onto it.
Thank you in advance
Click to expand...
Click to collapse
You would have to use a jtag for. That. This is why we tell people not to restore any backups from other devices. Nandroids are for the device they were made from only.
Sent from my Nexus 6 using Tapatalk
can't I wipe it completely
zelendel said:
You would have to use a jtag for. That. This is why we tell people not to restore any backups from other devices. Nandroids are for the device they were made from only.
Sent from my Nexus 6 using Tapatalk
Click to expand...
Click to collapse
But isn't there any way to simply wipe it clean and flash the file that I downloaded from sammobile ???? I did a wipe from TWRP, but still the MAC address stayed the same. Can't I wipe the file where it is stored?
krazyvladimir said:
But isn't there any way to simply wipe it clean and flash the file that I downloaded from sammobile ???? I did a wipe from TWRP, but still the MAC address stayed the same. Can't I wipe the file where it is stored?
Click to expand...
Click to collapse
The issue is that the file that controls it is not touched by flashing. IT is in an untouchable partition (well under normal setup) You can flash what ever one you want it still wont touch that partition. This is why it is always advised to backup the EFS partition. Mainly on samsung devices as they are known for corrupting.
I just wanted to post a follow-up in case someone runs into similar problem.
I was able to solve the issue by running the commands
adb shell
su
echo -n "001122334455" > /persist/wifi/.macaddr
That solved the issue and created a new mac address.
Looking For SM-T280 EFS
Where can I find efs file to download for SM-T280?
Related
I installed TWRP on my phone, and went into Bootloader an hit RECOVERY so I can get to the program (the first time I did this it brought me to the TMRWP program). THIS time, it completely wiped my friggin' phone... after I sat there like 4 hours re-setting up everything PERFECTLY how I wanted it.
What's weird is it kept ALL my apps that I converted to SYSTEM APPS, but all my user stuff is gone.
Lesson learned... Don't click recovery from Bootloader.
That has yet to happen to me with any recovery and 3 devices currently with twrp. Might be a step missed with the install or maybe you left a bootloader update zip and ran it when you rebooted? Or it can be a bug as going to recovery from bootloader via a cold start is how to get there traditionally. I would email teamwin and try to sort it out or redo the recovery install, making sure to check the md5 of the file after you download it.
Sent from my Transformer TF101 using Tapatalk 2
Your supposed to click recovery at bootloader. Thats where you do backup, restore and flash new roms.
HTC Sensation z710e
ICS 4.0.3
Sense version 4.0
Software Sense-o-maniac v1.3
Kernel. 3.0.30 Bricked
Radio 11.68.3504
That's what I thought too. If I'm not mistaking, I flashed the new firmware after I did the TWRP, so maybe that screwed it up somehow. I take it TWRP must be the LAST image you flash? Only flashes I remember doing were:
Customize bootloader screen
TWRP.
firmware update
Do I need to re-flash the new firmware before re-flashing TWRP, or is the firmware going to remain no matter what I do from this point on?
Just adb flash recovery. Put the recovery image in your platform tools folder. Adb reboot bootloader. when you are rebooted adb flash recovery recovery.img.
Or use one of the many tools made to do that on our forums
Sent from my ADR6425LVW using xda premium
Well I went ahead and used the GOO Manager to flash TWRP again, and this time it worked fine. I'm going to re-setup my phone again then before I customize it back like I had it, going to try to get to recovery and see if it works.
With it now being installed, does that mean I can't flash anything directly from SD Card or modify the bootloader anymore without it causing problems?
What I mean, moreso, is... if I ever put factory reset. will it reload the factory rom + keep the newest firmware I installed (etc.) or do I nee to back up the phone with TWRP and recover from that when I want to load it back?
Factory reset just puts things back to the way they were without the stuff in the data partition or any user apps or settings. This means that say you flash a custom rom, it will reset to as if that custom rom was freshly installed since the custom rom has replaced the factory rom in the /system/ parition and anything else related to it.
With that said it is usually a good practice after rooting a fresh device to do the nandroid and then transfer it to a computer before you do anything else. Note that while you probably won't be switching recoveries a lot, that nandroid backups generally work only with the recovery that generated them so don't get them mixed up.
Hi, Desperately need help. I have been flashing custom ROMs for 2 years now and this is the first time I have encountered this issue.
1. Device is a S3 i9300 international version
2. Device was running Stock 4.1.2 from a ODIN I had done a month ago
3. Recently changed to Omega ROM 4.1.2 and lost IMEI
4. Used ktools, to revery efs, but it did not work
5. Decided to run ODIN again using the same files as before
6. ODIN runs properly, is successful, phone reboots
7. Phone only reboots into Stock ROM - does not ask for Login process, as it always does on first boot. Get the stock ROM with no IMEI even now.
8. Also phone shows a black box in the middle with device data (PDA: 19300xxufme7, Phone: ...., CSC:....., etc.). The box dissappears when I enter app drawer, or any phone menu or app
9. Tried ODIN again. Shows as success. No Login process on first boot despite cache and factory reset in recovery. Black box still in the middle of the screen
10. CF-AutoRoot and TWRP installed successfully
11. Install Android HD revolution ROM to see if that works - No login process on first boot - Phone shows that Android HD is installed - but no IMEI still
Please help. Why am I not able to reset this with ODIN??
Update: Removed the black box by disabling FactoryMode in efs folder - using Root Explorer and instructions on http://www.youtube.com/watch?v=5sMtxJRt77k . OTHER PROBLEM STILL REMAINS. Why doesn't ODIN reset the phone to stock?
ODIN resets but partition of efs folder remains unchanged..
just flash any latest modems after xxemg4
Everything explained in detail here
Please read the EFS/ IMEI sticky
Why doesn't ODIN reset the phone to stock?
Does Odin throw up errors
amitks said:
Hi, Desperately need help. I have been flashing custom ROMs for 2 years now and this is the first time I have encountered this issue.
...
Click to expand...
Click to collapse
That's since flashing ROMs is not the same as understanding what you do
You have f*cked your efs. If you (or some ROM installation - Omega usually does that) made an EFS backup at some point you could recover things "soft". If not - you need to go to a shop that can write your IMEI and pay for that.
Before doing anything else read more about it - search the thread that talks about EFS.
I have been using JB I9100XWLSN_I9100OXXLS8_NEE for several months without problem. Rooted, with PhilZ-cwm6-XWLSN-OXX-4.92.3-signed.
3 days ago I updated to I9100XWMS1_I9100NEELS1_NEE with no problems. Today the phone stuck and when I booted into recovery I saw the default recovery not Philz. So I flashed it again (the newer version)
But I had a boot loop, so I tried to restore nandroid backup, it didn't work.
I tried to reinstall earlier ROM (LSN) but it gave errors.
Now I can only boot to Philz recovery without doing anything.
How can I restore the phone to anything which works, so that I can root it again.
Back to stock via Odin/download mode, re-root your phone, restore nandroid or reflash custom rom/kernel & start again from scratch.
I did as you said. Flashed the earlier ROM with ODIN but still cannot boot. I just read the Galaxy S II logo at the start and the phone will not start.
Boot into recovery - factory reset ?
Edit - Failing that, search for Hopper8's 'Odin troubleshooting' thread. There's a link to a 3 part firmware in that thread, try flashing that via Odin if you can't factory reset or it doesn't work.
All right, trying.
Well I booted, thanks. If you don't mind, can you guide me further? I'll just write what I intend to do:
1- Boot into recovery and flash Philz again.
2-Using Philz, will try to restore Nandroid backup. I had copied the backup to my computer. As Philz had errors restoring the backup, I copied the one on the computer to SD card, but the MD5 had changed. So I had to disable MD5 check in Philz. Is it normal to change after copying?
Yep those steps make sense. Simply copying a nandroid from your PC back to your phone (I've done this in the past) shouldn't normally change the MD5. The only way the MD5 would change is if any of the files/directories are different in any way.
I guess you're only going to find out if this makes any difference when you try to restore the backup.
Unfortunately, the backup did not work. You need this once in a while and it fails... So dissappointing. I will have to install everything manually. Lots of backup to put into the trash!
Thanks a lot.
Maybe see what you can salvage from the nandroids you have with some of the various apps on GP that allow you to extract files from nandroids (Nandroid Browser, etc) ?
OK. I'll give a try. It would be quite an help if I rescued some.
I also have a Titanium Backup. I'll check if it does most of the job.
Yep, you should be able to get most of your apps/settings back easily with Ti given you'll be restoring them to the same rom/kernel setup. Just remember not to restore system apps or settings. Hopefully you'll be able to pull other stuff out of your nandroids (contacts/call logs/sms/calendar/etc) with those apps I mentioned if you don't have those backed up to Google/elsewhere.
Actually, I just need Call logs and SMS. Most of other stuff are already online, no problem with Contacts, etc.
I had an earlier backup of SMS but will see whether it works or not.
If Nandroid Browser saves these, all will be OK.
I restored almost everything. Just some hours spent.
Thanks again.
Good job, glad you got everything working as it should again. I know doing everything from scratch is a pain, I did a completely clean install on an I9505 on Friday night which took a few hours. You're welcome
Hei,
I was running 4.3.1 Dirty Unicorns and wanted to flash Smartdroid.
So, flashed Devil recovery and tried to flash the ROM.
It gave me message that there's an error in the zip file.
I was just playing with the options available in the recovery and selected some option, which I don't remember now.
After that, the went into bootloop. "Samsung Galaxy S3 I9300" appears on the screen and the phone reboots again and again.
This loop continued.
The phone could be put in Download mode.
Then, I flashed CWM 6.0.4.4 and flashed 4.1.2, which I downloaded some time back.
It went on well. I could boot the phone and had set it up.
However, I couldn't connect to network.
The IMEI was some default one.
Rooted the phone and tried to restore the backup of efs folder using HC-Ktool.
After restore, when I booted the phone, it didn't boot.
"Samsung Galaxy S3 I9300" appears on the screen and the phone reboots again and again.
I tried flashing the ROM again, CWM again etc etc.
Nothing worked.
In one occasion, after installing CWM 6.0.4.4, I restored from NANDROID backup. Restore was successful.
But, it wouldn't boot.
Same "Samsung Galaxy S3" appears on the screen and the phone reboots again and again.
Once, I flashed Dirty Unicorns ROM from zip via CWM. Still the same.
What is happening and how to solve it?
Any help is greatly appreciated.
Regards,
Babloo
Wipe Data/Factory Reset -> Download mode
Flash latest Android 4.3 from Sammy through Odin, preferably XXUGMK6 or newer.
Hei,
This worked!!!
Thanks.
Why flashing 4.1.2, Dirty Unicorns didn't work and this one worked?
If you can explain, that will be helpful to all.
Now, though the phone is booting, the efs folder is corrupted.
IMEI number is not what it should be.
I have a backup of the efs folder taken using HC-Ktool long back.
So, the ROM on which efs folder was backedup will be different that the ROM I have now. (Does it make any difference?)
Can I just root and restore that efs folder using HC-Ktool?
Thanks for the help!!
Regards,
Babloo
Edit:
If I flash CWM Recovery 6.0.4.4 and restore the NANDROID backup that I took before I started screwing my mobile, will everything be fine?
Sounds like you tried to flash a corrupt file, always check the md5 before you flash.
EFS is totally separate to the rom, format the partition, restore your backup then factory reset should return your imei on the current rom.
Nandroid will not fix the efs, unless you used a custom backup process that included the partition -the default settings would not do this.
Hei,
"format the partition, restore your backup"
For this, can I just root the phone and use Ktool to restore backup?
If you suggest any other procedure, pls give me more info.
-Babloo
Hei,
After the previous post, I could restore my phone from NANDROID backup that I took yesterday, before the whole mess.
After that, I tried to restore the efs folder using HC-Ktool from efs.img.
It gives the message that restore is completed.
But, after reboot, the IMEI remains the same wrong one (the generic 004999...)
The size of efs.img is 20.48 MB.
I tried to restore using the terminal method.
With the command "unmount /efs" I get error message "sh: unmount: not found"
How can I restore the efs and get back my IMEI?
When I tried to "open" the img file in Windows, it couldn't open. It says that the file is corrupted.
Could it have been really corrupted or it is just that Windows is unable to open it?
I restored the efs using the same backup file.
Why is it not working now?
-Babloo
You are trying to skip essential stages and hurry to finish, but your partition is still corrupt -you can't restore anything to a corrupt partition.
Search and read someone who has succeeded doing the same thing, follow their guide exactly.
Hei,
boomboomer said:
You are trying to skip essential stages and hurry to finish, but your partition is still corrupt -you can't restore anything to a corrupt partition.
Search and read someone who has succeeded doing the same thing, follow their guide exactly.
Click to expand...
Click to collapse
I have been searching for a proper procedure to format the efs partition since your post.
Whatever I found didn't work for me.
Can you please point me to any post that you know?
-Babloo
Guys,
Any ideas?
-Babloo
Plugged in my old Captivate the other day to charge, and when I came back to it, was stuck in CWM. And would not boot into OS. I have some pics and videos I would like to pull off of it. I tried flashing to stock with Odin, but no love. Tried various kernels and CWM's and non of them will mount /sdcard. As far as I know it hasn't been wiped, as everything I've done says it can't mount /sdcard. Thought it was on CM11 but the boot logo looked like CM10.
Have been trying this http://howtorecover.me/data-recovery-internal-storage-android-phone-guide, but I am stuck at the "Making an image of Android internal storage". And not even sure this will work because I have to do everything in Recovery.
Can log into ADB and do some stuff while in Semaphore_KK_3.4.2c with "adb device= 3935DD422FE700EC recovery"
managed to get "list_of_partitions.txt" (attached)
Is there anyway to repair mount without wiping or retrieve my files?
Boot Into Recovery
BigB42078 said:
Plugged in my old Captivate the other day to charge, and when I came back to it, was stuck in CWM. And would not boot into OS. I have some pics and videos I would like to pull off of it. I tried flashing to stock with Odin, but no love. Tried various kernels and CWM's and non of them will mount /sdcard. As far as I know it hasn't been wiped, as everything I've done says it can't mount /sdcard. Thought it was on CM11 but the boot logo looks like CM10.
Have been trying this http://howtorecover.me/data-recovery-internal-storage-android-phone-guide, but I am stuck at the "Making an image of Android internal storage". And not even sure this will work because I have to do everything in Recovery.
Can log into ADB and do some stuff while in Semaphore_KK_3.4.2c with "adb device= 3935DD422FE700EC recovery"
managed to get "list_of_partitions.txt" (attached)
Is there anyway to repair mount without wiping or retrieve my files?
Click to expand...
Click to collapse
Hi there,
Well if you're able to boot into the custom recovery then you can use the adb feature to make up a backup of all the files
KIBS2173 said:
Hi there,
Well if you're able to boot into the custom recovery then you can use the adb feature to make up a backup of all the files
Click to expand...
Click to collapse
Great, so can you direct to a way to do it? Stuck on the above guide. Was stuck on SU privileges but aftter finding my current recovery and flashing su.zip every rime I boot the phone. Seem to be passed that. When I get to abd try to copy image it doesn't work.
Also I have read in some the posts that restore in recovery doresn't wipe personal files. Is that true?
BigB42078 said:
Great, so can you direct to a way to do it? Stuck on the above guide. Was stuck on SU privileges but aftter finding my current recovery and flashing su.zip every rime I boot the phone. Seem to be passed that. When I get to abd try to copy image it doesn't work.
Also I have read in some the posts that restore in recovery doresn't wipe personal files. Is that true?
Click to expand...
Click to collapse
Yeah there is a way before I say it What phone are you using again?
well in some cases and on some phones when you change the recovery to a custom one all data will be destroyed
so can you actually boot the phone and does it goes into the homescreen?
KIBS2173 said:
Yeah there is a way before I say it What phone are you using again?
well in some cases and on some phones when you change the recovery to a custom one all data will be destroyed
so can you actually boot the phone and does it goes into the homescreen?
Click to expand...
Click to collapse
It's a Samsung Captivate sgh-i897, will not boot into OS. Everything I've tried flashing was with Odin. tried a couple one-click stock odin installers. But even those would get blocked by mount error when the phone would reboot to install the OS.
Try this
BigB42078 said:
It's a Samsung Captivate sgh-i897, will not boot into OS. Everything I've tried flashing was with Odin. tried a couple one-click stock odin installers. But even those would get blocked by mount error when the phone would reboot to install the OS.
Click to expand...
Click to collapse
Hi there,
Okay so have you tried using Samsung Keis software it should help you to restore that phone however I'm not sure that you could the recover your old files on that phone but you can try various phone recovering software
Kies won't let me connect through recovery or download. Tried doin factory reset in recovery and that doesn't work either.
Hello,
I am pretty sure that the old Android phone cannot give your data back if you have saved any files after losing old data. New data might have overwritten the previous deleted files and you cannot retrieve them again. But if you have not saved any files after deleting then I must say, you can restore the files using a recovery program (androiddata-recovery.com/android-phone-recovery.php).
Going through this will allow you to get back every data deleted from your old Android phone without any backup. It is easy to use and one of the best reliable software to recover lost files from Android phone.