XT1925-6 fully stock, what are the most complete backup options before unlocking the bootloader and rooting? Can I backup partitions with adb backup or rsd lite? Is it possible to make a nandroid backup by using fastboot to boot twrp without flashing on this device, or does the locked bootloader prevent even that? If it is possible, are there any problems with booting twrp patched with tipatch on this device? Other options? I'd like a backup as thorough as possible, but at least has to cover anything needed to restore to a fully functioning device if needed. User data and settings would be great, but obviously not as important as IMEI and such.
The most complete backup option in your case is a ADB backup.
No, you can't backup a whole partition with ADB/RSDLite.
You can't even boot TWRP to make a backup.
There is no reason to restore something with a locked bootloader because you can't make any changes.
If your bootloader is unlocked you can first make a backup of every single partition (mmcblk0p1, mmcblk0p2, ...) before doing something else.
My advice is to backup your /persist partition and store it somewhere external on a safe place. It's containing your IMEI.
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Unlocking BL will format the /data partition. I made cwm backup before. After unlocking, can i safely restore the data partition? Afterwards the phone should be in state as before unlocking, right?
peters. said:
Unlocking BL will format the /data partition. I made cwm backup before. After unlocking, can i safely restore the data partition? Afterwards the phone should be in state as before unlocking, right?
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Hi @peters,
If ur considering unlocking ur BL, then i hope youve made a backup of your TA partition(the partition containing DRM keys needed for Bravia Engine 2)?Restoring the data partition wont relock your bootloader. If u want to relock your bootloader then you have to flash a stock kernel,make sure you are rooted and then restore your TA partition. Or you can use Flashtool to relock your BL.
Hope this helps
Yes i made backup of TA. With restoring of Data partition i wanted to have the phone in the same state as before unlocking. Of course with the difference of loosing Bravia and not using Fota.
My phone is not rooted (in case that make a difference on what method should be used in this case)
I would like to make a full image backup of the phone, factory-reset it, and then re-image it from this backup at a later date.
What is the best method to do the full backup (image) and later restore for a non-rooted phone?
Thank you
You can temporarily boot to a custom recovery like TWRP easily with Nexus root tool kit.
Advanced Utilities - Launch - Fastboot Boot - Custom Recovery
and make a nandroid backup.
I think you need to have your Bootlocker unlocked though....
From a very quick and unscientific Google scan it looks as if pure1water is right - you'll have to unlock your bootloader, which means YOU'LL WIPE YOUR PHONE!!!
(Just making sure... )
To install TWRP you don't need to be rooted.
There are lots of guides, so I won't repeat the detail. You can use Wugfresh's Nexus Root Toolkit (NRT) to set up your PC/laptop drivers so that you can use ADB.
Developer options/enable USB debugging/reboot to bootloader/temporarily fastboot TWRP (or install it permanently, since you'll be using it to restore)/take TWRP backup/copy to PC for safety.
It's well-known that XDA doesn't really approve of NRT when used as a way to circumvent knowledge. Use it for the driver setup, then read a great deal about how to do these steps that I've skipped quickly over above. That way you'll be able to recover when (not "if") you make a mistake and get a bootloop without asking panicky questions in the forum.
to install twrp for a one time use only..
fastboot boot recovery recoveryname.img
to install twrp permanently..
fastboot flash recovery recoveryname.img
If you bootloader isn't already unlocked I think the best you can get is backing up your apps and app data with helium..
It wont be nearly as good as a full TWRP backup but will be able to get a lot of stuff backed up.
I know this doesn't answer your question directly, but just so you know there is at least a little bit of backing up you can do without root or an unlocked bootloader to boot or flash twrp.
https://play.google.com/store/apps/details?id=com.koushikdutta.backup&hl=en
I can't figure out why anyone who knows enough to worry about full phone backups wouldn't have unlocked the bootloader on their Nexus 6 as the very first order of business.
But if you haven't unlocked the bootloader (which will wipe your phone), then the best you can do is to root it, install Titanium Backup, and do a full backup Apps+data. That's not as good or nice as a bootloader level backup, but will get most of the job done for a restore.
quadcrap1 said:
But if you haven't unlocked the bootloader (which will wipe your phone), then the best you can do is to root it, install Titanium Backup, and do a full backup Apps+data.
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Don't you need to have your bootloader unlocked before rooting though?
Hi all,
I'm coming over from a Nexus 6p to this phone and have been a long time ROMaholic. I am having a ton of problems flashing and restoring nandroids on the 3t however. I'm hoping that someone smarter than I about these things could give me some insight. The issue I have is many times when I flash a new ROM or restore a nandroid backup I'm asked for a password when I boot. If I reboot to TWRP for some reason it wants a password in recovery as well. I never add any security password to my ROMs at anytime so I confused as to why it suddenly would ask me for one. When this happens I'm literally forced to format the phone and re-install everything. Does it have something to do with dm-verity or something? Why is it encrypting my phone when I install a new ROM?
Thanks for any responses.
It is likely due to encryption. TWRP seems to have trouble decrypting after flashing different ROMs. You might be able to restore a backup if you sideload the same ROM as the one on the backup, flash TWRP, then restore the nandroid.
Decrypting your phone will make it much easier to jump between different ROMs frequently, at the cost of security of course..
After having a simular problem with twrp I post this question in the twrp thread and never got an answer. Mysteriously twrp was asking for a password but i was able to continue without the password. but was unable to wipe dalvik or anything.
So decryption is the problem. If so if you have a stock backup it will be difficult to re-install?
Anova's Origin said:
It is likely due to encryption. TWRP seems to have trouble decrypting after flashing different ROMs. You might be able to restore a backup if you sideload the same ROM as the one on the backup, flash TWRP, then restore the nandroid.
Decrypting your phone will make it much easier to jump between different ROMs frequently, at the cost of security of course..
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Thanks for the response! How am I able to decrypt? It seems like most ROMs have forced encryption. Am I just a noob and am missing a setting in the ROM or recovery.
To respond to the person that was having the same problem...It will allow you to cancel out of the decryption password but that portion of the internal storage is then inaccessible it seems, which would include any backups you previously made. That's why I've literally had to format my phone when switching or restoring from backup. It sucks!
You are going to have to format your data partition (complete wipe of both /data and Internal Storage).
Afterwards, flash your ROM and either immediately root, or flash a custom kernel. Root or custom kernels will prevent OOS from encrypting the phone again on first boot.
While there's no way to save the data on your phone as decrypting mandates a wipe, you can store all of the data on your computer and move it back to the phone after decrypting by following this guide.
I just came to know that unlocking my xiaomi device will erase its data !!!!
Is this true??????
this thread says this only!!! -> https://twrp.me/xiaomi/xiaomiredmi4x.html
:crying::crying:
KCstark said:
I just came to know that unlocking my xiaomi device will erase its data !!!!
Is this true??????
this thread says this only!!! -> https://twrp.me/xiaomi/xiaomiredmi4x.html
:crying::crying:
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Unlocking bootloader always erases Data Partition. First check that yours one is unlocked or not, not most devices are come locked. Unlocking will take time as Xiaomi gives you permission to unlock by their own software.
Make a backup, get all your data off then root it. I'm not entirely sure if you can unlock without erasing, but you should never be in a position where you can't afford to reinstall your applications.
This is why it is always best to get twrp on your phone asap so you can back up it.
No, unlocking bootloader doesn't wipes data but you must backup everything just in case anything goes wrong.
it is always recommended to backup everything when flashing ROM, kernel, mod, zip, flashing rom via fastboot method and recovery. in short you should backup everything in all this cases.
shohabmsk said:
Unlocking bootloader always erases Data Partition. First check that yours one is unlocked or not, not most devices are come locked. Unlocking will take time as Xiaomi gives you permission to unlock by their own software.
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Actually I know most part and have already done getting permission but this was just a quick question as that's my sister's device and she won't accept its data being erased still thanks for your quick answer...
And by the way that device's bootloader is locked I have checked it.
.....:good:
metelhammer said:
No, unlocking bootloader doesn't wipes data but you must backup everything just in case anything goes wrong.
it is always recommended to backup everything when flashing ROM, kernel, mod, zip, flashing rom via fastboot method and recovery. in short you should backup everything in all this cases.
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Have u done it your self if yes did u lose any of your data. Plz let me know......
KCstark said:
Have u done it your self if yes did u lose any of your data. Plz let me know......
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Yes i have flashed recovery and roms i always do backup important thing and i take screenshot of installed apps before making any changes and save them to pc or to cloud storage.
there was issue i had was when i flashed TWRP 3.2.1.0 via adb i do not why but it asked me for password i didn't know to password so i had to wipe everything including internal storage and data.
latest twrp is must which is TWRP 3.2.1.0 in order to flash Oreo based ROM.
i was using TWRP 3.0.2-0 before and i had no issue with this recovery i has flashed several nougat roms on this recovery even have upgraded and downgraded from miui9 to miui 8 everything worked perfectly.
i don't know why but i wasn't able to flash any marshmallow based or nougat based roms on TWRP 3.2.1.0 recovery.
yes i did lose data when upgrading from TWRP 3.0.2-0 to TWRP 3.2.1.0 but i had done backup so no issues.
i would highly recommend you to do backup if you are making any changes in your device.
metelhammer said:
Yes i have flashed recovery and roms i always do backup important thing and i take screenshot of installed apps before making any changes and save them to pc or to cloud storage.
there was issue i had was when i flashed TWRP 3.2.1.0 via adb i do not why but it asked me for password i didn't know to password so i had to wipe everything including internal storage and data.
latest twrp is must which is TWRP 3.2.1.0 in order to flash Oreo based ROM.
i was using TWRP 3.0.2-0 before and i had no issue with this recovery i has flashed several nougat roms on this recovery even have upgraded and downgraded from miui9 to miui 8 everything worked perfectly.
i don't know why but i wasn't able to flash any marshmallow based or nougat based roms on TWRP 3.2.1.0 recovery.
yes i did lose data when upgrading from TWRP 3.0.2-0 to TWRP 3.2.1.0 but i had done backup so no issues.
i would highly recommend you to do backup if you are making any changes in your device.
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Thanks bro
you need to install stock rom after unlocking
Unlocking Xiaomi Redmi4x santoni bootloader doesn't delete the data partition, but after unlocking the bootloader your phone won't boot, you need to install the same stock rom it was on phone previously.
Download MIUI Stock ROMs (if you didn't make OTA update from MIUI, check Older versions and download the correct ROM)
You can copy the ROM image to phone before unlocking or if you have already unlocked and stuck in boot, you can copy the ROM to an USB flash drive.
You need ADB installed on your PC.
Download the TWRP for Xiaomi Redmi 4X image.
If you want to restore the existing state of your phone, you need to make a backup of the data partition.
Press Volume Down + Power until phone gets in FASTBOOT.
Connect phone to PC with USB cable.
From PC command prompt type the command: fastboot.exe boot twrp-3.2.1-0-santoni.img
TWRP will start on your phone, you can backup all of the partitions, but you need only the data partition to restore.
Now Install the stock rom (you can select USB OTG if ROM is on USB drive), then RESTORE the backed up DATA partition only.
Is it possible to do a full backup without root or an unlocked bootloader? Given there's no fastboot this seems like a challenge.