I've been running PA for a while now, and I was wondering what the best method for swapping Roms is. (What to wipe) and how to do so without losing what is stored on my internal sd card, our currently installed apps.
(As a side question, what are some good roms with pie?)
Nexus 7
Factory reset, which will wipe data (but leaves /data/media intact) and cache. Although generally not necessary, I'd also format /system. Many devs will have their updater script format it as part of the flash, but I have seen a handful that have not. Your apps will be wiped when doing a clean flash- that's just the way it is. You should not be dirty flashing (wiping just cache and dalvik) between roms as it will lead to problems. You can use apps such as Titanium Backup or Rom Toolbox to backup and restore your user apps. Do not restore system apps or data.
Your side question is a quick and easy way to get this thread locked. Go to the dev forum for your device, whether it's tilapia or grouper, and do some reading and test drive a rom or two that piques your interest. There is no substitute for research and forming your own informed opinions.
you should also nandroid backup before you flash anything, that way you have a safe point to restore to if something goes wrong, or you don't like the new rom.
if it's a rom upgrade (not rom switch), you can flash directly over the top at your own risk if the changes are relatively minor and the dev says full wipe not needed. you won't lose any data and it saves having to set everything up again. i've personally never had a problem when flashing an upgrade straight over the top. I always do a nandroid backup beforehand though just in case :good:
and yeh..find a rom you like, not what someone else says is best for them...
If you're flashing 'like-for-like', ie, flashing a ROM upgrade, you can generally 'dirty flash' it over the top - UNLESS THE DEVELOPER STATES OTHERWISE.
The developer of the ROM I use always states 'no wipes needed' when he releases a new version...
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If you're changing ROMs completely, then a factory reset is necessary, otherwise you're likely to have all manner of problems...
So backup your apps using Titanium beforehand...
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You can optionally format /system... but be careful... make definitely sure you have on internal storage, either...
a) A flashable ROM .zip
...or...
b) a NANDROID backup
...or you'll find you have a tablet with no OS... just a custom recovery and the bootloader... although not irresolvable, such a situation is a pain in the arse to fix!
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Above all... before you do anything - MAKE A NANDROID BACKUP - I cannot emphasise this enough. It takes less than 5 minutes. And it is your lifeline back to a functioning Nexus, should anything go wrong.
Good luck...
Rgrds,
Ged.
Still no way to backup multi user data/apps?
Sent from my Galaxy Nexus using xda app-developers app
Related
I have a T-Mo G2 and want to keep my Froyo image to reinstall later if I cannot get theGingerbread to work right. I want to make an image file that will restore the phone to exactly how it is now. I have tried all kinds of stuff, but am not able to make the "img" file so that I ca do a restore when booting...
Can someone point me to what I need to install to do this, and if possible some directions on what/how to create the "img" or restore file ?
I would be most appreciative, as I had to reverse everything from the OTA of Gingerbread, since too many apps didn't work, ESPECIALLY the GPS!
My current Froyo is a temp-root system.
Thank you all!
Aloha. .
I would do full root via the wiki, and then install 4EXT (the full one that's like $2) - it will keep your old stuff straight
Ditto on previous reply
Root your G2
Backup all your apps with using Titanium backup
Get Clockwork mod ROM manger or 4ext ( I prefer 4ext) and backup your stock rom. You can download new ROM CM7 for first ROM.
If you don't like the ROM you can restore your stock ROM with CWM or 4ext at anytime.
I have a theory that Ti Backup or any backing up of apps is a bad plan. I know you can do it no problem, and that it is a great time saver, but I have a strong feeling that this ultimately results in an unstable phone with mysterious force closes etc.
Even though it's a real pain, I think you are always better off reinstalling your apps from scratch after changing to a new ROM and wiping caches.
WTF? said:
I have a theory that Ti Backup or any backing up of apps is a bad plan. I know you can do it no problem, and that it is a great time saver, but I have a strong feeling that this ultimately results in an unstable phone with mysterious force closes etc.
Even though it's a real pain, I think you are always better off reinstalling your apps from scratch after changing to a new ROM and wiping caches.
Click to expand...
Click to collapse
1. I have had zero problems with TB personally.
2. Without it your app data is gone.
3. Triple wipe, takes a few extra minutes and makes a world of a difference.
4. Do not restore system data!
5. Check md5 sums BEFORE doing anything!!!!
6. Make sure you have a recent nandroid backup and you'll be fine either way.
7. triple wipe before flashing anything including nandroids. Preferably with different wipes aka factory reset, superwipe+ ext4, then recovery wipe!
Just my 2 cents, it's saved my a$$ more then a few times...
ok guys, i have had my ****ty 3rd gen ipod touch for a while now, and this christmas i know I'm getting a nexus 7. now i consider myself fairly good with technology. but the only realm i havnt explored is android and that starts with the nexus 7. I am planing on rooting, but keeping the stock rom. I know i can't do ota updates with root. So the only way if i wanted to update my nexus 7, would be by flashing the next stock rom via twrp. the question is will it keep ALL MY DATA (apps, media, and settings)???? if not how can i keep it?
thank you and thanks in advanced.
if the update changes the version of Android, like from 4.0 to 4.1, then a wipe is recommended. if its only a small update, like minor ROM update, and the android version stays the same (eg. cyanogenmod nightlies) then there is no need to wipe. You get to CHOOSE (and you will hear this word a lot in the world of android) to wipe your data or not with a custom recovery. just dont blame it when your apps keeps crashing after an major update.
how does keeping your data work with ota updates then, wouldn't it be just as dangerous? also i would format? then restore my data with titanium backup?(right?)
If you just unlock/root, but do not install a custom recovery, you should have no issues receiving ota's. It's the addition of a custom recovery that prevents the ota from installing. Though you may lose root, so an app like ota root save is a good idea.
Sent from my Nexus 7 using xda premium
Can someone give a straight answer?
Do you lose data if you flash ROM?
For example flash the exact same ROM twice? Would data, like SMS get deleted?
sirNemanjapro said:
Can someone give a straight answer?
Do you lose data if you flash ROM?
For example flash the exact same ROM twice? Would data, like SMS get deleted?
Click to expand...
Click to collapse
Straight answer is... no...
If you're flashing 'like-for-like'... that is to say UPGRADING a given ROM, then generally, you just 'dirty-flash' over the top.
If your're changing ROM completely, then a full SYSTEM WIPE is probably recommended.
Rgrds,
Ged.
Usually if you already did the unlock and recovery process (usually a one time thing in the beginning), then you mainly just have to understand the 3 main partitions you're dealing with on rom flashing from recovery.
/system = this is where the system/OS files live, and where for the most part the roms install to
/data = this is where the usual user data lives, since the /system rarely changes, stuff like settings, downloaded applications, etc is stored here. Rom installs rarely ever wipe this, and normally it does not need to be wiped if you're upgrading from one rom to the next (such as going from SlimBean 6.0 to 6.2, same type of rom just an upgrade). If of course they are different roms a /data and /system (and cache/dalvik-cache) wipe is recommended before flashing the rom.
/data/media (if I got that right) = sort of the "media" area of the device where you will store most of your stuff like downloads, music, pictures, etc. In recovery, wiping /data will usually not touch this, it's just like the /sdcard partition on older phones.
When trying out a new rom, it is always best to backup via recovery, the backups are stored in that media area I spoke of, and it's also advised to copy them onto a computer when you get a chance. The Nexus 7 and TWRP Recovery supports USB-OTG so you could plug up a thumbdrive and save the backup there directly. If you run into problems, you can always go into recovery, wipe everything and restore from a backup.
---------- Post added at 02:18 AM ---------- Previous post was at 02:16 AM ----------
By the way forgot to mention, even if you're just flashing an upgrade, it's still idea to wipe the cache/dalvik-cache (it won't affect your data, but new binaries should be reloaded by erasing the cache so they can be re-built).
Thanks guys. My phone was stuck in boot loop and I had to flash the stock ROM again and again and again until I got it working.
I lost several messages, that is what I expected.
However, before I torched and burned the phone with ROMs, I backed up the device (or whatever I was backing up, I dont know) with CWM backup.
Is there a way I can get those SMS messages out of this backup?
sirNemanjapro said:
Thanks guys. My phone was stuck in boot loop and I had to flash the stock ROM again and again and again until I got it working.
I lost several messages, that is what I expected.
However, before I torched and burned the phone with ROMs, I backed up the device (or whatever I was backing up, I dont know) with CWM backup.
Is there a way I can get those SMS messages out of this backup?
Click to expand...
Click to collapse
If you have the PRO (paid-for) version of Titanium, there is a way you can extract stuff from Nandroid backups... but I don't have a 'Tilapia' Nexus 7 to test. (with regard to your SMS problem).
Just running it (Extract from Nandroid backup in Titanium PRO) on my 'Grouper' Nexus 7, and I can see all my apps (and associated data) in my last Nandroid available for individual extraction and restore.
Rgrds,
Ged.
It was a stock ROM, nothing out of the ordinary. I mean, there was a different kernel, I've put root kernel. So, if there is option to get it from stock system, that would be nice.
sirNemanjapro said:
It was a stock ROM, nothing out of the ordinary.
Click to expand...
Click to collapse
And?... your point is?
Please elaborate.
Rgrds,
Ged.
Hi
As you've prob guessed I'm a noob, hence the help.
Ive just recently rooted and unlocked my nexus 7 with wugfresh 1.6.2 and am now looking at putting a custom rom on it.
Ive followed the advice and put titanium backup on and backed up my apps and system data.
Having read the instructions for installing Smooth Rom 4.4, it states 'Please do not restore a 'system' data backup as it would overwritte some important files'
does this mean I cannot restore my apps from titanium backup as I cant restore system data as they where backed up together or is there some other way for me to do it ?
does titanium backup get wiped as well ?
All Help appreciated, this is my first rom install and I dont wanna **** it up.
Robbie_UK said:
All Help appreciated, this is my first rom install and I dont wanna **** it up.
Click to expand...
Click to collapse
The most important thing to do is to make a FULL nandroid backup before you begin.
The 2nd most important thing to do is to get that backup copied someplace else besides the tablet. (PC, USB key, etc) Screw-ups involving accidental erasure of the psuedo- SD card area on the tablet are commonplace with folks that are new to this. It won't do you any good to make a backup if you immediately erase it while fooling around with a custom recovery (or toolkit) that is new to you.
I suggest you learn to make backups using the custom recovery rather than relying on a toolkit.
If you are happy with the tablet in it's current configuration, then a back-up allows you to survive any ****-ups that inevitably follow as you can return back to a known state and proceed again having learned from your mistakes.
FULL NANDROID BACKUPS. COPIED SOMEPLACE SAFE (OFF THE TABLET)
As for TiB, the only thing that is 100% safe is to only restore apps & their data that are NOT pre-installed in whatever ROM you are installing. Note this means not restoring any of the Google gapps as well, as you may have had a different versions of those apps running on your current ROM than on the to-be-installed ROM, whether pre-installed or updated later.
Yeah it's a bit of work restoring apps one by one and re-configuring things. There probably are System apps that can have their data safely restored to the wrong version of the app - but there are absolutely no guarantees that correct operation of the app will follow that.
cheers and good luck
Hi all,
I have learned a lot about Android customization in the last week since my Nexus 4 finally arrived at my door, and I have become reasonably comfortable with the processes of flashing ROMs/kernels, and backing up my phone to make sure I have something stable to return to if something happens to go wrong. However, I am still dealing with a few points of confusion that I was hoping someone could clarify for me:
1. I have CWM installed on my phone and I can use it to backup/restore images of my phone for safety. However, I have heard about other methods like Nandroid, Carbon/Helium, and Titanium Backup while browsing the forums, and have tried them only to become confused as to how they are different from using CWM backup. Could someone please explain this to me and clarify which is the best for keeping a backup of my phone stored on my computer?
2. I have noticed that when I "wipe date/factory reset" in CWM, not everything on my phone is wiped. There are still plenty of files left over from previous ROM installs when I browse my phone with Android File Transfer, and obviously the .zip files you need to flash new ROM's/kernels are left too. What exactly is deleted when do a CWM factory reset?
3. Is it necessary to wipe everything when installing a custom kernel? I have CyanogenMod 10.2 installed because it is quick and relatively bloat-free, but allows for enough customization that I can make the my phone feel the way I want it to. I want to give Matr1x/Hells-core a try, but I am tired of factory reseting everything when install a new kernel. Can I get away with just wiping Cache/Dalvik and flashing the new kernels? If not, what is the best way to avoid losing app data between ROM and kernel flashes?
4. What is the difference between the default Android superuser, CWM superuser, and SuperSU? They all seem like the same thing and it makes me nervous installing different ones.
Any information you guys can offer would be great. Thank you so much for your time !
Downloaded7 said:
Hi all,
I have learned a lot about Android customization in the last week since my Nexus 4 finally arrived at my door, and I have become reasonably comfortable with the processes of flashing ROMs/kernels, and backing up my phone to make sure I have something stable to return to if something happens to go wrong. However, I am still dealing with a few points of confusion that I was hoping someone could clarify for me:
1. I have CWM installed on my phone and I can use it to backup/restore images of my phone for safety. However, I have heard about other methods like Nandroid, Carbon/Helium, and Titanium Backup while browsing the forums, and have tried them only to become confused as to how they are different from using CWM backup. Could someone please explain this to me and clarify which is the best for keeping a backup of my phone stored on my computer?
A backup in CWM is the same as a nandroid backup. It basically take a "snapshot" of your ROM and restore it exactly as it was when backing up.
Titanium Backup is an app that backup your apps and app's data. It's recommend you only restore user's apps and data. Let Google restore any system app's data.
2. I have noticed that when I "wipe date/factory reset" in CWM, not everything on my phone is wiped. There are still plenty of files left over from previous ROM installs when I browse my phone with Android File Transfer, and obviously the .zip files you need to flash new ROM's/kernels are left too. What exactly is deleted when do a CWM factory reset?
Wiping data/factory reset only wipe the data. Wiping system will wipe your ROM (system partition) Of course you don't want to wipe all the files such as the ROM you're going to flash.
There's an option to format internal sd, that will wipe EVERYTHING so unless you know how to ADB push files or sideload a ROM, DO NOT touch that.
3. Is it necessary to wipe everything when installing a custom kernel? I have CyanogenMod 10.2 installed because it is quick and relatively bloat-free, but allows for enough customization that I can make the my phone feel the way I want it to. I want to give Matr1x/Hells-core a try, but I am tired of factory reseting everything when install a new kernel. Can I get away with just wiping Cache/Dalvik and flashing the new kernels? If not, what is the best way to avoid losing app data between ROM and kernel flashes?
No, just flash kernel. Some recommend wipe cache and dalvik cache after kernel flash before reboot.
4. What is the difference between the default Android superuser, CWM superuser, and SuperSU? They all seem like the same thing and it makes me nervous installing different ones.
Different app that does the same thing. Usually go with what is recommend by the ROM's dev. I ususally just leave what's included with the ROM.
Any information you guys can offer would be great. Thank you so much for your time !
Click to expand...
Click to collapse
Hope that answer some of your questions. I'm sure I left out some stuffs so hopefully someone else can add to it.:good:
I am wanting to install Scott's CleanROM 4.0 on my my 32GB Nexus 7 Wifi tablet. I have rooted the tablet using the Wugs toolkit and have TWRP Recovery installed and created a back up on an external USB stick. My ultimate goal is to be able to charge my phone while using OTG/MHL at the same time with my OTG Y-adapter. If there is a better rom I can use or an easier way to achieve my objective, by all means feel free to advise me. Thanks in advance.
Clean Master has a feature where you can back up apps. Then restore them. Also, when moving ROMs, your pictures and Videos will stay.(Only if you factory reset. DO NOT WIPE THE VIRTUAL SD CARD.)
If you do need to wipe your SD, then back up your Pictures, Video's and other stuff on your PC then restore them. Back your apps up with an app Although, I personally don't mind re-installing all my apps.
younggeek1 said:
Clean Master has a feature where you can back up apps. Then restore them. Also, when moving ROMs, your pictures and Videos will stay.(Only if you factory reset. DO NOT WIPE THE VIRTUAL SD CARD.)
If you do need to wipe your SD, then back up your Pictures, Video's and other stuff on your PC then restore them. Back your apps up with an app Although, I personally don't mind re-installing all my apps.
Click to expand...
Click to collapse
Thanks for informing about Clean Master, but that's diverting from my question at hand. I am already aware that when changing roms that my files/pics will still be intact. Since CleanRom is essentially an AOSP rom, I just did a Nandroid backup on my USB-OTG, Factory Reset: Wipe Data /Cache/ Dalvik, and restored the Data only from my Nandroid backup (although I understand it's not recommended) on the new rom to recover my settings and apps. Maybe my question was confusing, so let me correct myself. What I was asking was: is there a Kernel I can use that enables me to use USB-OTG and charge my device simultaneously. I notced that Timur has a Rom but I rather use a Kernel achieves this end result alongside CleanRom. I tried installing ElementalX 1.8 and it won't show up after reboot everytime I install it.