[Q] How do I flash a rom and still retain data - Nexus 7 Q&A, Help & Troubleshooting

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.

Related

Rooted w/ FR008

But I'm having random freezes/crashes, especially when I watch an embedded youtube vid.
What's the best way to troubleshoot?
TIA,
Tx
Tx Redneck said:
But I'm having random freezes/crashes, especially when I watch an embedded youtube vid.
What's the best way to troubleshoot?
TIA,
Tx
Click to expand...
Click to collapse
Make sure when you flashed from the stock rom, you wiped data, wiped cache, and wiped dalvik cache. If not, do it and reinstall.
I didn't do that because I was afraid to loose apps that I already had and didn't know how to recover stuff once the flash is done.
try MyBackup Root
i'm about to find out how well it preforms after wiping and installing a new rom. i'll let you know.
so i went from liberated froyo fr008 to cm6-6.1.1 and it appears to have restored all my apps + data + settings as best it could considering its a little different from the sense system.
apps work, settings work. the app worked =D
I would like to have a clean install(see no ATT bloat) but not have to go through and configure everything. What's gonna be the most stable Rom?
Tx Redneck said:
I would like to have a clean install(see no ATT bloat) but not have to go through and configure everything. What's gonna be the most stable Rom?
Click to expand...
Click to collapse
Based on your original post, since you are rooted and running FR008, then you already have a very stable ROM with HTC Sense and does not have any AT&T bloat on it.
It looks like the mistake you made as far as stability goes is that you did not perform a Wipe Data/Factory Reset before you flashed FR008 in hopes of keeping your apps and settings. I suggest you bit the bullet and do a Wipe Data/Factory Reset and then reinstall your apps and you'll have a very STABLE environment.
Lemme ask this, right after rooting and running nandroid, I pulled the the sd card and copied its entire contents(at east as much as Win would "see", not sure about any additional partitions) to my lappy.
If I do a clean install by wiping all factory data, cache partition and dalvik, will I be able to restore any items from that copy I made?
Please forgive me for teh newb questions. I can fix a puter all day long, this android stuff is greek to me.
Tx Redneck said:
Lemme ask this, right after rooting and running nandroid, I pulled the the sd card and copied its entire contents(at east as much as Win would "see", not sure about any additional partitions) to my lappy.
If I do a clean install by wiping all factory data, cache partition and dalvik, will I be able to restore any items from that copy I made?
Please forgive me for teh newb questions. I can fix a puter all day long, this android stuff is greek to me.
Click to expand...
Click to collapse
If you did a nandroid backup to your SD card, yes nandroid has an advanced restore option where you can selectively restore different partitions from the backup, such as boot, system, data, cache, etc. although I have never tried it.
Rooted last night with the Liberated FR008 rom and everything seemed to go smoothly, now though my browsers won't stay open. If I try to go from a link in an email the browser will open then close, pretty much same thing when I just open the browser. Any ideas why this is happening?
Phone: HTC Aria
Browsers tried: Default, Dolphin HD, xScope

Newbie needs help/info

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...

[Q] Best way to change roms?

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...
-----------
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...
-----------
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!
-----------
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

[Q] Different backups, superusers, and flashing kernels

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:

[Q] Very slow performance, after some rom work.

So, i was curious about Paranoid Android. So i decided to give it a try on my N7.
I started with an already unlocked, but otherwise stock N7, 2012, Running the stock KitKat ROM.
I installed TWRP, used an auto-root method which booted an image via fastboot, and rooted. Then I booted back into KitKat, and installed Titanium Backup Pro to back up a few apps I didnt want to lose in the flash.
Then, i booted back to TWRP, and ran a system backup, so I could restore if needed.
Once the backup was done, I installed Paranoid 4.2 beta4, from their paranoidandroid.ca, and gapps from goo.im.
Booted paranoid android well enough, but man, it was sluggish. Really sluggish. It was painful to get my google aco**** logged in and then setup my email accounts. Thats about as far as I got before I decided that this was just not usable, and decided to drop back to my stock rooted backup.
Now, through all of this, I dont have a ton of storage space avaialble. The backup took up 4gb, and its only a 16gb tablet. I had a few hundred mb available after the backup, and install of paranoid.
After restoring my backup, things were still pretty darn slow. I cleaned up a decent amount of space, i have about 1.5gb available now. Its improved, but still sluggish. I'm not ready to delete the twrp backup yet, as i may try paranoid again, or maybe another rom, but I want to get tot he bottom of this speed problem first.
Does android depend on free /sdcard disk space in order to function well? Knowing what I know about linux this seems strange. Or is it that I should have wiped cache/dalvik when I restored my backup? I did wipe both, and /data when I did paranoid.
Any suggestions?
Thanks!
gangrif said:
So, i was curious about Paranoid Android. So i decided to give it a try on my N7.
I started with an already unlocked, but otherwise stock N7, 2012, Running the stock KitKat ROM.
I installed TWRP, used an auto-root method which booted an image via fastboot, and rooted. Then I booted back into KitKat, and installed Titanium Backup Pro to back up a few apps I didnt want to lose in the flash.
Then, i booted back to TWRP, and ran a system backup, so I could restore if needed.
Once the backup was done, I installed Paranoid 4.2 beta4, from their paranoidandroid.ca, and gapps from goo.im.
Booted paranoid android well enough, but man, it was sluggish. Really sluggish. It was painful to get my google aco**** logged in and then setup my email accounts. Thats about as far as I got before I decided that this was just not usable, and decided to drop back to my stock rooted backup.
Now, through all of this, I dont have a ton of storage space avaialble. The backup took up 4gb, and its only a 16gb tablet. I had a few hundred mb available after the backup, and install of paranoid.
After restoring my backup, things were still pretty darn slow. I cleaned up a decent amount of space, i have about 1.5gb available now. Its improved, but still sluggish. I'm not ready to delete the twrp backup yet, as i may try paranoid again, or maybe another rom, but I want to get tot he bottom of this speed problem first.
Does android depend on free /sdcard disk space in order to function well? Knowing what I know about linux this seems strange. Or is it that I should have wiped cache/dalvik when I restored my backup? I did wipe both, and /data when I did paranoid.
Any suggestions?
Thanks!
Click to expand...
Click to collapse
I gave cache and dalvik a wipe, and rebooted. What little performance gains I thought I got earlier from cleaning up the storage, are now gone. Its just as slow as it was again. Sigh. What have I done to my tablet?
Have you tried to do a full wipe of the device and factory reset?? (wipe internal storage included) I've found that this helps greatly with speed and stability on allof my devices. It is a hassle though.....
Sent from my Nexus 5 using xda app-developers app
Mojar7070 said:
Have you tried to do a full wipe of the device and factory reset?? (wipe internal storage included) I've found that this helps greatly with speed and stability on allof my devices. It is a hassle though.....
Sent from my Nexus 5 using xda app-developers app
Click to expand...
Click to collapse
I haven't gone this far yet, because of the hassle. I may do this and see what happens.
Backed up my stuff, reinstalled paranoid, and did a full wipe.
So far, so good, appears to be much faster.
gangrif said:
Backed up my stuff, reinstalled paranoid, and did a full wipe.
So far, so good, appears to be much faster.
Click to expand...
Click to collapse
Sounds good bro. Good to hear.
Sent from my Nexus 5 using xda app-developers app
Yep. Still not sure why wiping my personal data did the trick, I did wipe all of the app and cache data the first time around...
Oh well, if it works it works, dont complain right? Thanks for the suggestion!

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