I bought a Desire Z about two weeks before the 1.72.405.2 OTA update came along, and I allowed it to update (Yeah I know, this was after all my first Android device).
Anyway, lately my phones been running slowly and apps force closing, so I've decided to downgrade it and root it (psneuter method), and try some different ROM's.
What I was wondering is, what would be the best way without root, to backup as much of my data as possible, apps, sms, files, and also if possible a backup that I can use in case I scew it up, so I can get it back to the way it is now.
I have a copy of:-
RUU_Vision_HTC_WWE_1.34.405.5_Radio_12.28b.60.140e_26.03.02.26_M_release_155556_signed
which I believe is the stock ROM for this device, but as far as I know if it goes wrong I'll be unable to flash this as the update won't allow me to flash an earlier version..
Would I be able to mount and then backup the whole phone using adb or any other method.
I've been reading about it for a while now, and while I have lots of bits of information, I've been unable to find a good solution.
Thanks,
...John...
j0hn0n1 said:
I bought a Desire Z about two weeks before the 1.72.405.2 OTA update came along, and I allowed it to update (Yeah I know, this was after all my first Android device).
What I was wondering is, what would be the best way without root, to backup as much of my data as possible, apps, sms, files, and also if possible a backup that I can use in case I scew it up, so I can get it back to the way it is now.
Click to expand...
Click to collapse
Without root, a good app to backup your other apps is astro file manager, its available free from the market, you just have to hit menu, tools and it'll back up all the apps on your sd card, in terms of files, just make sure their all on your sd card and they'll be fine
Not sure how to back up SmS but i know their are apps out their, a point you may have forgotten is to make sure you back up your contacts as they all get wiped and I made this mistake, the easiest way to do that is to make sure your contacts sync up with your google account so after rooting, you can just sync them back,
Hope i helped!
Use google to remember what apps you've downloaded from market. Once associated, when you flash a new rom, google will automatically redownload all your associated apps. For sms, i suggest you download GoSMS and use their internal backup feature. It will save to sd and be visible to your stock sms app as well on restore.
Sent from my AOSP Virtuous Desire Z using XDA App
Ya but too many times google starts restoring apps that I uninstalled months ago. Great idea but bad implementation imo.
Sent from my HTC Vision using XDA Premium App
Sorry I haven't replied, was in work all day yesterday.
I have Astro File Manager, but I hadn't even considered it, thanks. I have my contacts sync'd with Google, so it seems that as long as I backup my files and sms everything else should be done automatically anyway.
Go SMS seems worth getting anyway, as the bog standard Android messages app is seriously dull. I'll give it a try.
I had wondered about Google Market restoring apps, but I thought it would only reinstall apps that were installed at the last sync.
If you install an app and it screws up your phone, and do a factory reset then Google will just reinstall the app that caused all the problems in the first place.
Definitely a good idea, but needs more work.
Anyway, thanks for all the info, I'll give it try tonight, when I get back from work.
...John...
I find SMS Backup & Restore to be the best app for this purpose and I wouldn't recommend the backup feature from the market, as you said it is likely to give problems.
Without root though, the backup choices are somewhat limited for apps and such.
I've been using Super Manager by gpc. It works pretty good, plus offers a ton of other features that can be used with or without root.
I've backed up what I could, although it's typical that as soon as it's all gone I realised things that I should have wrote down (I had been using the wallet/pocket app and although I backed up all my apps, I'm guesing it won't have backed up any of the passwords, logins, bank details, etc).
Anyway, I've downgraded and successfully rooted my phone (through gfree), I have CID: 11111111 and S-Off, but I haven't installed and ROM's yet as I read somewhere that you are supposed to wipe everything between ROM's, am I wiping the Davlik cache or doing a factory reset (I mean won't the factory reset just reset my stock ROM back to it's original condition).
I'm also wondering about finding custom ROMs, on my dell streak I had installed ROM Manager and could get a list of any that were available.
I first installed ROM Manager and used it to flash recovery, but this time I've installed CWM first, so would it be safe to install ROM Manager now, will it want to flash a recovery over the one I have already.
Or is it not advisable to use ROM Manager, as I have previously heard of a few problems it may cause.
Thanks ...John...
Rom manager shouldn't give any problems, but for custom roms it's best to take a look at the development forum. If you don't like that you can still use the list in rommanager, it might be just me who prefers downloading roms to my pc first.
But before you install any of them I recommend you make a nandroid backup from recovery just to be safe.
I think the issues were that some people, not all, found problems flashing some of the gingerbread roms via Rom manager. Better to save the Rom to SD and then flash it via CWM.
Right I've done a nandroid backup, and I've saved one to another mSD card which I can keep somewhere just in case (probably a bit over cautious, but...).
I thought that by saving apps to an sd card, they would run from the sd when I restarted my phone, even the ones that I had moved previously with the application manager in settings are not seen.
Still reinstalling the ones I want isn't really that bad.
Seriously, somebody needs to sort out the Markets app backups feature, when I was setting up the phone at first, I specifically chose to not automatically sync with Google and that I would do it manually when needed. Then I went in to the market to get a file manager and the download failed, it was only when I looked at what was going on I realised it was already downloading and reinstalling 96 apps. I looked around for a 'cancel all' option and there isn't any, so I had to cancel them all one by one and then uninstall the ones that had managed to install.
A simple checklist to select the apps you want would be great, oh, and a cancel all button would be a bonus.
Anyway, things are not as much fun when they're too easy.
Thanks ...John...
Related
I just had a bad experience with MyBackup Pro. I just re-flashed from Sky Raider 2.00 to 2.01. Everything worked beautifully after re-booting under the new ROM. So then I attempted to Restore my apks+data with MyBackup Pro. But after that finished, I never saw such a mess after a re-boot. Thank God I had a nand backup... So now that I'm back where I started from, is there an app out there that actually works? I'd like to try this again.
I'm not sure why MyBackup didn't work. I heard some good things about it, and that is why I decided to try it.
I've also heard of Titanium Backup...but has anyone restored SUCCESSFULLY after a ROM upgrade with this utility?
Just posted this in another thread so I feel like a broken record but yes, I used Titanium to backup pre-2.2, installed CyanogenMod 6, and restored apps+data (NOT system data) and everything seems to have turned out fine.
When you say you've never seen such a mess after a reboot, what exactly do you mean?
I use titanium everyone I write and install a new rom,for sky raider and cyanogen..great app.never had a problem
Sent from my Incredible using XDA App
The "mess" I talked about was some apps that wouldn't run. I would get errors instead. Outlines for some widgets instead of widgets. Wallpaper didn't change, but icon placement was as it was before re-flash. POP mail account lost config. Etc. I didn't make a list. I just said enough of this and did a nand restore.
So if I use Titanium, what should the procedure be to be sure I get back everything as it was? Or am I asking too much? Will I still have to reconfigure some things?
I just installed Titanium Backup. It doesn't appear to be as user friendly as MyBackup Pro. Can you give me some brief advice? I'd really appreciate it. I'm still wet behind the ears.
Thanks!
I use Backup Pro and haven't had any issues. I have had a few oddball apps not backup but never one that I bought or downloaded from the Market.
Lexus One said:
So if I use Titanium, what should the procedure be to be sure I get back everything as it was? Or am I asking too much? Will I still have to reconfigure some things?
I just installed Titanium Backup. It doesn't appear to be as user friendly as MyBackup Pro. Can you give me some brief advice? I'd really appreciate it. I'm still wet behind the ears.
Thanks!
Click to expand...
Click to collapse
I've only used it a few times so I'm not exactly a pro, but here goes. There's a tab that says backup/restore, that has a list of your apps and whether or not there's a backup of the app. If you hit Menu and go into batch mode, that's where all the good stuff is. Before I flash a rom I'll go into batch and back up all user apps and system data. You can also schedule backups to be performed while you're sleeping or something, just so you always have new backups.
To restore, you can go into batch mode and restore apps and data. When I went to CyanogenMod6 from stock, I restored only apps and app data. I didn't restore system data because I'm pretty sure if you restore system data when moving between roms it causes a lot of problems (I'm not an expert though, might wanna ask someone more knowledgeable).
Another thing to consider: if you have a lot of apps, Titanium is a giant pain in the ass unless you have the donate version. With the free version, it asks for confirmation when restoring each app, so that can be very bothersome. The paid one does everything automatically.
Hope this helps
I have been searching and reading through posts for a few days now, so this post is not for lack of trying.
I am unable to use Titanium Backup. It says I need to have BusyBox, which will not install saying that I do not have "nand" access or something (a bit of a noob here).
I've also tried to backup through ROMManager, but all it does is reset my phone and tells me that it cannot backup, and gives me a long list of things to try. I have done most if not all, to no avail. Help?
Sent from my ADR6300 using XDA App
gmonox said:
I've only used it a few times so I'm not exactly a pro, but here goes. There's a tab that says backup/restore, that has a list of your apps and whether or not there's a backup of the app. If you hit Menu and go into batch mode, that's where all the good stuff is. Before I flash a rom I'll go into batch and back up all user apps and system data. You can also schedule backups to be performed while you're sleeping or something, just so you always have new backups.
To restore, you can go into batch mode and restore apps and data. When I went to CyanogenMod6 from stock, I restored only apps and app data. I didn't restore system data because I'm pretty sure if you restore system data when moving between roms it causes a lot of problems (I'm not an expert though, might wanna ask someone more knowledgeable).
Another thing to consider: if you have a lot of apps, Titanium is a giant pain in the ass unless you have the donate version. With the free version, it asks for confirmation when restoring each app, so that can be very bothersome. The paid one does everything automatically.
Hope this helps
Click to expand...
Click to collapse
Thanks, I appreciate the advice on doing this the correct way. I know what my mistake was now, it was the fact that I also restored the system data. I'll try this again tonight when I get home...
HarrisonBP said:
I have been searching and reading through posts for a few days now, so this post is not for lack of trying.
I am unable to use Titanium Backup. It says I need to have BusyBox, which will not install saying that I do not have "nand" access or something (a bit of a noob here).
I've also tried to backup through ROMManager, but all it does is reset my phone and tells me that it cannot backup, and gives me a long list of things to try. I have done most if not all, to no avail. Help?
Sent from my ADR6300 using XDA App
Click to expand...
Click to collapse
If you go into Titanium, there is a button that says "problems", click that and there should be a button that should install busybox for you.
Thank you, I read the forums, but not the buttons on my screen... stupid. :-(
Sent from my ADR6300 using XDA App
gmonox is on point. I went through all of this yesterday after getting Froyo. My apps all reinstalled and seem to work just fine with one exception. I had a NexusMod Live wallpaper that wouldn't work. Sad too because it was my favorite because it was Cyanogen inspired and just used the cyan color. Other than that, everything seemed to work fine.
MyBackup Pro still has issues under Froyo. The permissions banner will not go away after backing up. I have to reboot my phone to get it to go away. My task killers don't work on this.
Hi!
I was a winmo user (samsung omnia) and I flashed the damn thing regularly, I mean like every week. So I had to reinstall everything from scratch. I don't want to be caught in that loop again, so I am asking you if it is possible to backup all my programs, data and settings and then just apply them after the flash.
Thank you very much, proud Legend user!
Backup contacts : hmm, you don't really have to do this, if you save your contacts on Google account, everytime you login to Google account on your phone, Contact list will be auto appear in People, even avatar pictures.
Apps : Use Astro File Manager to backup all apps in your phone, then flash another ROM, go to market to install Astro again, then backup apps from SD card.
Settings : hmm, I'm not sure you should do this, because everyrom is different, restore settings on this ROM to another ROM may damage your android. But you can always try Titanium Backup on Market.
Thanks! I am still wondering if I should flash because froyo is knocking on our doors.
slovenec88 said:
Thanks! I am still wondering if I should flash because froyo is knocking on our doors.
Click to expand...
Click to collapse
Yeah froyo is really close, right after the desire the EVO 4G got its OTA.
So I'm expecting the update within 14days I would say a week but that might be to optimistic.
source: http://www.engadget.com/2010/08/02/evo-4g-starts-getting-android-2-2-update-over-the-air/
You can def.ly try Titanium Backup to get all your Apps + data backed up. You can also try My back up pro to back up your SMS and MMS along with your call log, Alarm and other application. With my back up pro you can back up to the SD card or online....
Titanium Backup requires root. You can also use MyBackup pro. You can use been root (with more features) or not been root (only backups apps, but not settings, what is not so good)
You can also use ROM Manager (free in the Market) to backup you full ROM and configuration: it will backup everything on SD Card (except your SD card and you can quickly recover old ROMs with full confuration and apps.
So le me get this straight, with rom manager I will be able to back up the entire Rom... cause if something goes wrong and can not update a newer rom, I can always go and choose my previous rom for the recovery screen....
Caifan09 said:
So le me get this straight, with rom manager I will be able to back up the entire Rom... cause if something goes wrong and can not update a newer rom, I can always go and choose my previous rom for the recovery screen....
Click to expand...
Click to collapse
Yes, and everything will be exactly as in the moment you did de ROM backup. It is like a full hard disk image in a PC.
But, consider this:
With ROM Manager, you can have as many backups as you want and you can recover any one of them. BUT, you need to be able to boot your Legend to be able to launch ROM Manager (because ROM Manager is an application)
So, if you meet problems starting up a new ROM, you will need to load any rooted working ROM to be able to start up and launch ROM Manager (need to be rooted to be able to run ROM Manager).
As far as I know, if you use a ROM with A2SD feature, apps will be stored in the EXT3 partition of the SD card, and those apps WILL NOT BE INCLUDED IN BACKUP. So, if apps stored in the EXT3 partition changed, you will need to recover those apps with Titatium Backup.
There is another way to do a full backup called NANDROID, but I do not like it so much:
power off Legend, push "Back" bottom and Power On, select BOOTLOADER, select RECOVERY, connect USB cable to your PC, run "recovery-windows.bat" from your PC (from the same directory you used to root your Legend) and you will be able to select NANDROID BACKUP.
With NADONDROID BACKUP you can do also a full ROM backup, but you can store and recover only ONE backup/last backup. In addition, you need a PC to be able to run it. So, that is not very nice.
ok i see... thanks for the info....
Hi,
I currently own an HTC Hero, and will most likely be getting an HTC Desire HD.
Now, I have almost 150 apps on my Hero, and I really dread the hassle of re-installing and setting up everything to my liking. It has taken me almost a year to set this up the way I want it.
Would it be possible, using Titanium Backup, to make a backup of EVERYTHING possible on the Hero, and then switch the memorycard to the Desire HD and restore it there, maybe without the app settings? I am thinking that this could be a problem because of the different specs, but I do not know too much under-the-hood-stuff regarding Android.
I am hoping to not have to go through the market for that many downloads.
Any thoughts on this?
Kingkeld.
Market apps will automatically re-install when you sign in into your new phone. For the rest there is Titanium backup
I planned on doing the same, but doesn't Titanium require root?
I can't remember what it's like to not have root, the thought is scary
Try Android commander for the PC, Plug in your hero, goto application manager, select all the apps and click backup, then when you get your new phone selsct all the backed up apps and click install Hope it helps
christonabike said:
I planned on doing the same, but doesn't Titanium require root?
I can't remember what it's like to not have root, the thought is scary
Click to expand...
Click to collapse
It does need root that is correct but I'm sure, as stated there are other ways to backup apps. I'm not sure about if you have your apps on ext partition though. I wager root wont take long and then comes recovery roms and then customs... mmm custom
Thank you for the replys. I can not sleep.
Now we just need a root confirmation. Yes, the thought of owning an unrooted phone is scary. Not sure what to think of it. I hope it will not last long.
All I ask is root. I can wait for the custom ROMs. There will be plenty to play with.
You just need to pick your apps from /data/data, copy them over with adb, and do a fix_permissions
See?
OR chmod by hand
;]
I used Titanium to migrate my app settings from Milestone to Nexus One, but they're on similar versions of Android and both are HDPI devices.
I can tell you that Market apps don't always reinstall automatically if you're going from one phone to another. In any case I suggest a fresh market install of your most important apps, and then restore their data by Titanium if necessary. If this causes a crash, wipe their data again. Less important apps, could just try restoring them directly. Run Titanium's Market Doctor when that's done.
I also suggest using apps like BookmarkSB, SMS Backup Restore, Call Log Backup Restore, etc to transfer those records. May work better than trying to Titanium restore data across different OS versions, and doesn't require root. Good luck! Let us know how it goes.
Sent from my Nexus One using XDA App
I did search. honestly. so im pretty sure that many people are annoyed when they see a new version of their current rom show, thus having to upgrade again loosing all their setting, apps, etc. personally, i've tried using titanium backup from mdeejay's rEVOlution 2.0 to 2.2 but it said that my apps could not be restored. so what would be the best way to painlessly switch android roms? sorry if a similar thread exists, but i'm pretty sure it doesn't..
1. this Thread should be in the "HD2 Android Q&A" Sub-Forum
2. There are many post's out there! Look into the build-threads!
(but i'm in a good mood) so...
3. ...here is my answer:
a) Data.img:
you can copy your old Data.img file into the new rom (Android-Folder) before
booting it. But use with caution, maybe the settings in the data.img are
incompatible with your new rom. (in that case - delete it and use the orig. data.img)
b) Titanium Backup:
- be sure that your Backup is the made with the same TB Version like the
one you trying to restore with.
(restoring from V 2.x.x to V 3.x.x does not work for me.)
- Use the Busy-Box offered by TB (Problems?-button) to prevent error's
- And be careful with restoring the settings! Maybe they are not compatible!
4. I suggest to rename the old rom folder to "Android_old" and
leaving it on the SD-Card for a while.
In case of problems you can rename your folders "Android">"Android_new"
and "Android_old">"Android". So you have the Option to play around with
Backup-settings and creating new one's.
Good luck!
first of all, thanks for the promt response. and secondly, i've already tried everything you've mentioned! when i used my old data.img, android booted normally. however, i had none of my apps, nor my settings. and i double checked my titanium version. it's the same as the one in the new rom. oh, and i started this thread because none of the given solutions would solve my silly little problem....
This sound's more like a problem with the revolution-build.
I don't had a problem like this with other Mdeejay-builds
(never testet revolution) and Mattc-builds
My data.img from a desire-build had worked in desire-hd-build.
But i'd switched back to the original Data.img to prevent possible failure.
Normally moving app's with TB works fine, settings are more
problematic.
But you have a very special problem.
Sorry, i cant't help .
I suggest to ask your question in revolution-thread:
http://forum.xda-developers.com/showthread.php?t=790374
You don't have to restore the app with tb, maybe try downloading the apps then restoring the data separately
Sent from my HTC HD2 using XDA App
You cant realy save anything but your apps. The builds can be different enough between versions that a clean install is the only way to guarantee that you have success. I keep Titanium back up apk on my card and the folder it makes as well. I dont loose my apps and only use it to back up and restore apps. You need to re-do all other settings as they can carry issues from one build to another. Some things will back up, others wont, its part of the trade off. When you change builds, most of the time its so different, its like changing phones, you just cant transfer everything.
-------------------------------------
Sent via the XDA Tapatalk App
I have a Vibrant with fusion 1.1 that is going back to T-mobile. Is there a way to just clone everything on this phone to the new phone.
Can I just copy Titanium backup form the old phone and put it on the sd card of the new one. Is there a better method?
You need to flash back to stock using odin, just go to the development section and click om the.sticky, under odin roms. Click the.stock one and flash,
Sent from my SGH-T959 using Tapatalk
iwillkillyou said:
You need to flash back to stock using odin, just go to the development section and click om the.sticky, under odin roms. Click the.stock one and flash,
Sent from my SGH-T959 using Tapatalk
Click to expand...
Click to collapse
That wasn't his question... Like at all...
I'd do a nandroid and back up the apps and data in titanium and save them to the SD and then put that SD in the new phone that comes.
Oh haha sorry I didnt read the whole thread, yea peform a nandroid
Sent from my SGH-T959 using Tapatalk
kuhan said:
That wasn't his question... Like at all...
I'd do a nandroid and back up the apps and data in titanium and save them to the SD and then put that SD in the new phone that comes.
Click to expand...
Click to collapse
What would happen if I copied all the contents of the internal memory (all files ,all folders) then copied those over the contents of the new phones internal memory?. Nandroid and TB are not normally saved to the external SD card.
Or should I just load the new rom on the new phone and just copy the TB folder to the new phone and restore from that?
Nandroid and titanium are a good start but neither of those will do things like modem files.
So I would add on the new phone do a base install of fusion 1.1 with the appropriate kernel, i think you said was your rom, then a nandroid restore and that should get you there
ransome7 said:
I have a Vibrant with fusion 1.1 that is going back to T-mobile. Is there a way to just clone everything on this phone to the new phone.
Can I just copy Titanium backup form the old phone and put it on the sd card of the new one. Is there a better method?
Click to expand...
Click to collapse
I'll chime in with my opinion. Granted my opinion comes from my experiences constantly experimenting with different roms. I've flashed the phone this month almost as often as I've received actual phone calls for crying out loud!
The amount of time expended on looking for such a perfect method seems to be greater than the amount of time spent merely reconstructing an equivalent environment.
Keeping all of my contacts on google and using appbrain to have the ability to keep a known inventory of apps...I can reconstruct my daily driver environment from one rom to another in about 30 minutes max without the need to explicitly backup anything.
Though this may not work for everyone, it surely would work for most. Just a thought...
Using AppBrain would mean you would have to constantly re-download your apps. Also, this does not save the settings and what about apps that are not on the market?
I use Titanium Backup if I want to transfer all my apps and settings. Nandroid would be very appropriate to transfer over all the of phone's data, granted you also manually include the correct modem and kernel.
Doing a Titanium Restore surely takes less time then redownloading and installing from the market, especially if you have the Pro version as it is MUCH MUCH quicker.
kangxi said:
Using AppBrain would mean you would have to constantly re-download your apps. Also, this does not save the settings and what about apps that are not on the market?
I use Titanium Backup if I want to transfer all my apps and settings. Nandroid would be very appropriate to transfer over all the of phone's data, granted you also manually include the correct modem and kernel.
Doing a Titanium Restore surely takes less time then redownloading and installing from the market, especially if you have the Pro version as it is MUCH MUCH quicker.
Click to expand...
Click to collapse
Titanium can save some time, but honestly not enough to write home about, at least for me. It's a matter of a few minutes different in my experience.
The reason why I do not use Titanium, despite the fact that it can save some time is that it can lead to complications especially when bouncing between 2.1 and 2.2 derivative roms, depending on what you back up of course. I'll use it when I'm staying within the domain of 2.1...or staying within the domain of 2.2. Crossing those domains however I never use Titanium. I've had more problems than not, and admittedly that may be due to my ignorance of what things are truly safe to restore across different versions of Android.
Then again I'm probably unusual compared to the OP, in that I experiment with EVERYTHING, up to and including a little bit of my own firmware cooking after the fact. Every firmware and experimental firmware and filesystem hack has at some point been on this phone, but that's how I roll.
Doing without deliberate backups hasn't drastically changed my restore times. Setting up the few apps that require setup takes a matter of seconds when I decide to use that app.
It's nice to get a fresh install - just TB and and reinstall after!
iwillkillyou said:
Oh haha sorry I didnt read the whole thread, yea peform a nandroid
Click to expand...
Click to collapse
You didn't even read the title of the thread before clicking it, bro....
-bZj
if you want exact - nandroid
otherwise use TitaniumBackup Pro
This is what I would do. I would perform a nandroid. After doing so I would then copy everything in the internal sd to your computer. When the new phone comes. Copy everything into the new phone's internal sd. Root your phone, install clockwork mod. Flash a new rom if you want if not no biggy. Load up into clockwork mod, do an advanced restore, restore data only. Reboot. Reboot again. Load back into clockwork mod, clear cache and dalvik. Reboot twice. Run fix permissions. Reboot. Everything should work with no errors and it will look identical to your last vibrant. You could condense this but I wrote it so that you could install buncha diff roms without having to do titanium restore because that just takes a ****ing long time if you have a **** load of apps installed.
Mouahmong said:
This is what I would do. I would perform a nandroid. After doing so I would then copy everything in the internal sd to your computer. When the new phone comes. Copy everything into the new phone's internal sd. Root your phone, install clockwork mod. Flash a new rom if you want if not no biggy. Load up into clockwork mod, do an advanced restore, restore data only. Reboot. Reboot again. Load back into clockwork mod, clear cache and dalvik. Reboot twice. Run fix permissions. Reboot. Everything should work with no errors and it will look identical to your last vibrant. You could condense this but I wrote it so that you could install buncha diff roms without having to do titanium restore because that just takes a ****ing long time if you have a **** load of apps installed.
Click to expand...
Click to collapse
Thanks for the lengthy explanation , that makes the most sense.
I will try this method . Thanks for taking the time.
Hey rancome7 - did you try this method? How did it work for you.. I may just do this right now as im in the same situation of wanting to clone my Vibrant to a new Vibrant
Question - wont restoring data from a nandroid after installing a new ROM cause the rom to act funny since the old data may not agree with it or overwrite something?