[Q] Rom flashing help - General Questions and Answers

I have a rooted Galaxy tab 3 running the stock rom. I would like to flash a custom rom, but would like to know if I can do this without losing all of my data and settings. I have access to my corporate email and calendar via Maas 360 app. Currently, one of the requirements is not having a rooted device, but I was able to fool it using root cloak.
I have Titanium Pro installed and have everything backed up. I also have TWRP recovery installed. Is it possible to flash a new ROM and reinstall all of my apps (data, settings) without messing up the Maas 360 account?
Thanks!

Hi,
If you install a custom ROM on your device, all data will be lost (excluding the SD card).
If you backup and restore your apps/data using titanium backup all the apps will be the same as before. But some apps may not work.
I advise to make a full nandroid backup using TWRP to recover your phone if anything goes wrong.

Related

Backup data before flashing ROM

Hello. I have Vodafone 845 with Mr. Edition ROM (1.6.x version) and I would like to switch to the newest one and/or to try other ROM.
I don't want to lose my data on the phone, but I don't know how to backup them.
I've heard about Titanium backup, but I think it will not backup all (SMS, wifi settings, ...).
I have seen Backup/Restore in recovery mode. Can something from that menu help me? I want to backup to SD card, not to my computer (running Linux and there were some problems with flashing phone after I bought it - PC hadn't seen it, but I could flash recovery menu to it...).
I need to backup all data mainly (backup of apps is not needed, but can be done within process).
Clearly I want: Backup -> wipe -> flash -> restore -> use my phone just like before flash
Any help appreciated

Backups: Nandroid v. TiBu

Can someone help me understand the difference between a Nandroid backup and using Titanium Backup? Is it similar to the difference between image-based backup vs. file/application based backup? Under what circumstances would one be better than the other?
Your simile is spot on. Nandroid backup is used to completely restore a system with all apps and data.
Titanium Backup is used to restore/reinstall apps and data without changing your system. It's really handy if you get brave and decide to flash a new ROM on your phone. TiBu can put all your previously installed apps into place very quickly.
If you don't like the new ROM, just restore your old system from the Nandroid backup.
Ok, so help me think this through.
I've already Rooted/S-off/flashed a ROM on my phone. So presuming that the ROM image I download via CWM or XDA is on my card anyway, and I have TiBu (I have the paid version) that I can use to selectively restore apps, settings and data, would not Nandroid be redundant in this case?
OlafTheOx said:
Your simile is spot on. Nandroid backup is used to completely restore a system with all apps and data.
Titanium Backup is used to restore/reinstall apps and data without changing your system. It's really handy if you get brave and decide to flash a new ROM on your phone. TiBu can put all your previously installed apps into place very quickly.
If you don't like the new ROM, just restore your old system from the Nandroid backup.
Click to expand...
Click to collapse
The point of a nandriod backup is to easily go back to a working setup without having to spend time installing apps and tweaking all the numerous settings to your liking. 5 minutes to restore a nandroid backup vs. 2 - 4 hours of installing & tweaking.
DInc with CyanogenMod 6.1 & Invisiblek #28 kernel.
Download Nandroid
Where do I download Nandroid?
Will this one work from the G1 thread?
http://forum.xda-developers.com/showthread.php?t=459830
Thanks
Nandroid is actually part of Clockwork Recovery. If you reboot to recovery mode you can make and restore backups from there.
As you say your on a custom ROM I assume Clockwork Recovery/CWM/ROM Manager was installed as part of the process.
There is a good overview of ClockworkMod Recovery at http://www.addictivetips.com/mobile/what-is-clockworkmod-recovery-and-how-to-use-it-on-android-complete-guide/#features
BillTheCat said:
Can someone help me understand the difference between a Nandroid backup and using Titanium Backup? Is it similar to the difference between image-based backup vs. file/application based backup? Under what circumstances would one be better than the other?
Click to expand...
Click to collapse
I was just wondering about the same thing, so thanks for the thread.
Making a Nandroid backup right now ;-)
BTW, nandroid backups are stored on your SD card. You can free up space by either deleting or moving them to storage off the phone. Just keep a backup of your preferred restoration ROM on the SD card. Also, at the very least, it's a good idea to save a backup of the original manufacturer's ROM somewhere.
DInc with CyanogenMod 6.1 & Invisiblek #28 kernel.
technoplunk said:
There is a good overview of ClockworkMod Recovery at addictivetips dot com
Click to expand...
Click to collapse
thanks for the link.
One issue though... it says ClockWorkMod requires ROOT access to create a backup rom image, which on my phone (ATT Aria with HBOOT 1.02) require to have S-OFF first with alpharev, yet most instructions tell you to create a nandroid backup first (which makes sense in case something goes wrong)...
Am I missing something ? you can't create a back, and you take risk doing S-OFF+Root to get there.
I want to remove unwanted ATT crapware, and install non market apps, but I need root access for all this. right ?

[Q] Backup and restore on newer OS

I'm wondering if I can expect a backup using Titanium Backup (backing up all user apps + system data) on my existing phone running Android 2.2.2 to be properly restored when it comes back from a factory repair running a newer OS. Will my apps and data really work properly if they update my OS? I'd rather go this route than using a root backup type backup because I'd like to get the OS upgrade. Or is there an easier way to get an OS upgrade while keeping all my apps?
I am using Titanium Backup on my rooted device.
I am afraid this app and other backup-apps are only able to backup and restore user, or pre-installed applications that are not part of the OS.
You cannot backup or restore any system data without rooting the device first, because accessing system data requires root access. The same is true for restoring the data later on.
So if you want to backup system data, preferences or a whole system backup (NANDbackup), you'll have to get root first!
Good luck:fingers-crossed:
Ethan5150 said:
I'm wondering if I can expect a backup using Titanium Backup (backing up all user apps + system data) on my existing phone running Android 2.2.2 to be properly restored when it comes back from a factory repair running a newer OS. Will my apps and data really work properly if they update my OS? I'd rather go this route than using a root backup type backup because I'd like to get the OS upgrade. Or is there an easier way to get an OS upgrade while keeping all my apps?
Click to expand...
Click to collapse
Yes this will work as you said you backed up system apps instead is in my experience sometimes when you restore apps and data through titanium it sometime makes apps a little wonky like force closing and such. I would go for it worse case scenario is you notice apps acting up, do a factory reset if unrooted or wipe and reinstall rom if rooted and then when you restore with titanium press the option to restore app only then a least you don't have redownload apps from the market
Sent from my HTC HD2 using Tapatalk 2

Restore Only user data from my Backup file

Hi, can we restore only user data/ app data from the backed up file from recovery. We are not looking to get the ROM restored.
For an example, I had a custom ROM and in order to install another custom ROM, I've backup the internal data + system. Now, on my new ROM i require the old apps and app data present. Since I have a backup file, is it possible to restore only app data from the file?
Note: Titanium backup works only on root.
Background story: Root attempt has soft bricked my phone multiple times using SU 2.46. Hence, I have completely refused Titanium backup for phone's sake.
Thanks in advance. :angel:

Titanium Backup error 3 when flashing "update.zip" from TWRP!

TL;DR: How to fix Titanium Backup error 3 while flashing "update.zip" from TWRP?
I have been using Android for more than five years now seriously and it is a bit funny that I did not know I could restore data to newly flashed ROM.
Previously, I would just wipe system and flash new ROM not touching data partition and that worked just fine.
That is past seems.
I have flashed new ROM which is based on stock Samsung Galaxy S9 Plus ROM so I could get official updates. The problem is my phone lost one fifth of its performance according to benchmark and it experiences random reboots (I hope not while I am typing ?)
All in all, by restoring previous data on new ROM some of the files seem not to be overwritten well on new ROM (possibly application versions not getting downgraded well).
LogCat did not help.
I deleted my data (I have backup of course) and my system works normally so it is a data problem.
That is where Titanium Backup came into play.
I made backup of all user applications and an "update.zip".
When I want to flash "update.zip I get error code 3.
Some say it is due system partition but I formatted it in couple of manners and I am still unable to restore.
Is there any other way to restore applications and its data to new ROM?
I have tried backing up the applications and moving the Titanium Backup folder to SD card and moving it back when I flash new ROM. Backup does not get detected.
Thank you in advance!
dedq said:
TL;DR: How to fix Titanium Backup error 3 while flashing "update.zip" from TWRP?
I have been using Android for more than five years now seriously and it is a bit funny that I did not know I could restore data to newly flashed ROM.
Previously, I would just wipe system and flash new ROM not touching data partition and that worked just fine.
That is past seems.
I have flashed new ROM which is based on stock Samsung Galaxy S9 Plus ROM so I could get official updates. The problem is my phone lost one fifth of its performance according to benchmark and it experiences random reboots (I hope not while I am typing [emoji854])
All in all, by restoring previous data on new ROM some of the files seem not to be overwritten well on new ROM (possibly application versions not getting downgraded well).
LogCat did not help.
I deleted my data (I have backup of course) and my system works normally so it is a data problem.
That is where Titanium Backup came into play.
I made backup of all user applications and an "update.zip".
When I want to flash "update.zip I get error code 3.
Some say it is due system partition but I formatted it in couple of manners and I am still unable to restore.
Is there any other way to restore applications and its data to new ROM?
I have tried backing up the applications and moving the Titanium Backup folder to SD card and moving it back when I flash new ROM. Backup does not get detected.
Thank you in advance!
Click to expand...
Click to collapse
When switching ROMs, restoring data from a previous ROM causes issues, especially when the data contains system data and apps from the previous ROM, user apps and their data usually restore fine, but the system stuff doesn't.
Sent from my SM-S767VL using Tapatalk
Solved using Migrate.

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