Galaxy Tab P100-cant delete prior owner info - Galaxy Tab Q&A, Help & Troubleshooting

Ive searched and havent been able to find a solution to this, although Ive seen it asked before.
Galaxy Tab P100 bought from a pawn shop. It still has the prior owners (unknown) gmail info minus p/w. I cannot remove the account, or access market because of this. Everytime I tried to data reset (both via Privacy settings and also CWM), add a new rom, or add apps - after I reboot it goes back to the prior owner settings and apks.
I have Odin'd/Heimdall with different roms but they dont stick. Different kernels install though. Ive added two different CWMs. Superuser breaks after every reset - I gain, then lose, root. Ive rooted/added root explorer and deleted accounts.db and user.db - they go back after. Ive spoken with Sprint and we tried everything they had, as well as a ##786# and MSL number (resetting phone activation I think?). Their response was take it in to send back. I want to fix it myself.
It seems to me that this prior info is overriding and reinstalling every reboot, preventing any new flashing/etc from taking place.
Here is my question. I took it apart this morning and disconnected the battery (thinking maybe it will wipe any memory). But does it have a CMOS-type battery? I noticed there is a small round battery-looking connection soldered into the mainboard (see here - step 7/8 http://www.ifixit.com/Teardown/Samsung-Galaxy-Tab-Teardown/4103/1)
Does anyone know what this is? I dont really have anything to lose, but Im not great with a soldering iron, but will try. Im thinking this might be for the memory, and disconnecting/reconnecting this would erase any permanent user information, freeing it up for me to add mine.
Or if anyone has any new ideas I would appreciate it.
Thanks for the time. Ed
Sent from my rooted/rom'd PG86100 using XDA Premium App

It is not a battery backed memory, it is a NAND chip.
Sounds like the chip gone bad.
Sent from my GT-P1000 using XDA

Just an update.
I did not do anything with the round battery thing, as priyana stated the memory is stored on a nand chip. I put the tab back together.
I rooted again, and found the ea24 firmware and loaded it via odin. It took, but the prior user info was still there, and everything (I mean a crapload of apps) began force closing. I did confirm that ea24 was on it. I then flashed back to ef17.
I contacted Sprint repair store again, and they told me that they probably cant fix it, and its something they have to send back. They said that I have done all that they would do in-store.
I dont understand what could be wrong, as I found the prior owner and spoke with her. She had no issues with it. It worked fine prior to her getting rid of it. And it works fine, I just cant get rid of any prior info. I googled it and it seems like there are people out there who have the same problem, but no one has an answer, including sprint or samsung.
So much for my venting. Ill keep trying to find an answer.

roninep said:
I have Odin'd/Heimdall with different roms but they dont stick. Different kernels install though. Ive added two different CWMs. Superuser breaks after every reset - I gain, then lose, root.
Click to expand...
Click to collapse
First of all, I'd like to apologize for posting something that won't really help, but I recognize this from somewhere else. On some devices, there's some kind of file (that you can delete via the adb prompt when you're root) that on every bootup checks to see if the installed ROM matches stock, and if not, restores to stock. This sounds exactly what you're experiencing when you mention that no ROMs "stick".
I think you should try to look into if there's some files that need to be erased in order for a ROM to be cleanly installed that you haven't gotten rid of. It might also be some kind of feature that the previous user enabled, so maybe it's somewhere around in the settings that you can disable it, who knows.
It definitely does not sound like a memory issue because I don't see how a memory issue could make the stock ROM suddenly appear again after you've installed a custom ROM through CWM (assuming CWM gives no errors or anything and the custom ROM has actually been wiped).
Maybe you can do a more thorough wipe of the device memory manually with some guidance from someone who knows more about how these tablets work :fingers-crossed:

I agree with you about some type of file and bootup. Thats why I went with maybe it being a cmos/nand issue. I couldnt understand that I wiped everything, and information was still coming back. It makes me think that somewhere, something is being stored separate from the main drive.
Ive used the factory restore, CWM (2 different versions - 3 and 5 I believe), and wiped data (factory reset), cache and Davlik three times each before I flashed the CM ROMs. And I have not had any errors or problems installing any of the CWMs.
I spoke with the previous user, and she did nothing above turning it on/off, and using it. I am not on the Sprint network with it, and the wi-fi doesnt turn on until I set it up, so I cant see it being something that contacts Sprint and OTAs from them.
Can anyone tell me if, using ADB, there is a more thorough wipe I can perform ? More than the normal one done through CWM or Android factory restore?
Something similar to the reformatting of a hard drive?
Thanks
Ed

I have the same problem. Did you find any solution?
I believe the previous owner info is stored on sprint servers. When you reboot, it downloads all the crap.
The long time required to reboot explains the slow transfer of data - wireless.
These wireless service providers are pretty sneaky.
Thanks

Hi,
Have you tried formatting both internal and external Sd via Windows? (connecting via USB)
You can also try CM10, it has a different memory map which will write your device completely.
Regards
Sent from my GT-P1000 using Tapatalk 2

I have this same problem with a tab. Its not connected to sprint,has not been on the internet at all. Was there ever a fix for this?? Please let me know its a christmas present and i need to fix this issue. Thank you

Related

Reflash HTC Wildfire, 3 Net Locked

Hey Guys, My HTC wildfire is net locked to 3, i have tried several times to install a custom rom via unrevoked 3 tool.
This is the process i went through:
downloaded rom(s) - have tried several
copied to SDcard
ran unrevoked 3
backed up
reset to factory settings + then wiped cache partition
install from SDcard > navigated to zipped rom
installation flashed up for a second then quit, does this everytime on any rom
reboot
checked software name everytime and is only coming up saying 2.1-update 1
any ideas on how i can get either unlocked 2.1 ROM or 2.2 ROM installed? is there anything i am doing wrong / missing
many thanks
w1ngs
You need to first debrand your WF. You do this by creating a Gold card.
I did mine by the Modaco method.
Google debrand wildfire and you'll see.
Good Luck
Ok nevermind, have found it, many thnks, now sitting with my debranded phone, flash time
Hmmh, still the same result when i came to flash the ROM. It opens then quits a second later. I now have a debranded phone.
Any ideas?
Well I can't offer you a solution but I can tell you that my Wildfire works on 3 without any need for the gold card method. Make sure you have added 3 network settings in wireless network settings. Sometimes custom ROMs don't pick this up.
Also, at the risk of sounding insulting, make sure you have paid your bill. I thought I had my bill set to direct debit but either the 3 customer service goons failed at setting this up or my bank wouldn't allow it. So for a couple of days I was thinking that my custom ROM wasn't working but actually it was 3 had cut me off.
just a small point here but a fairly substantial one, i am talking about flashing the wildfire to a different ROM, not having network issues, your comment was unhelpful as perhaps you did not read the original post. Thanks
Can anyone help?
angelw1ngs said:
Can anyone help?
Click to expand...
Click to collapse
Try reflashing as I had that problem once. And try a different memory card as I have killed 3 mem cards upto now!
angelw1ngs said:
just a small point here but a fairly substantial one, i am talking about flashing the wildfire to a different ROM, not having network issues, your comment was unhelpful as perhaps you did not read the original post. Thanks
Click to expand...
Click to collapse
Just a small point here but a fairly substantial one, you said it was net locked, as in network issue.
Did you click install zip from sd card or apply update.zip

Factory reset after every reboot

Weirdest thing happens, I'll boot my DS7 and it's like if I just did a factory reset...every time. I'll customize my homescreens/gmail and what not, and do a normal reboot and it does a factory reset every time. I've read a few threads about similar topics and no one seems to know what's going on.
I've wiped data/cache/dalvik and fixed permissions, doesn't help. Re-install ROM, doesn't help.
I tried reflashing superuser.zip says installation aborted (bad). Same when I try to flash HC (yes, I'm still on Froyo).
Any clues ladies and genitals? Any help would be appreciated.
Sounds like you are experiencing the READ-ONLY bug that plagues this device. Hopefully it is still under warranty so that you can send it to Dell. Last summer I sent my Streak 7 to Dell. They repaired the read-only bug and had it back to my house in about 2 weeks.
Basically, what happens when your tablet goes into read-only mode... any updates, installs, customizing you do will be lost upon a reset... even though it appears like things are updating, they simply are not saved to the internal flash drive. Also, when it gets really bad some of the apps (along with the web browser) will start to get fatal errors.
That sounds about right, especially since even when I try to move a file from my netbook to the device (such as a new ROM to try to flash in CWM) it wont show up after I reboot either.
Don't think its under warranty anymore, dang.
Yes this is what happened to the one I got off Craigslist too the person I bought it from also changed his phone number instantly, so I got screwed but I'm in the process of getting a replacement or getting an extended warranty on it.
Sent from my Galaxy Nexus using XDA App

Emergency calls only

For a couple of days now I've had 'Emergency Call Only' status on my phone, i.e. can't make calls. Internet is working fine (with or without WIFI).
It is nothing to do with the SIM card, the SIM card works fine in another phone and I've tried a different SIM card in my S5830i which doesn't work either.
I have the normal stock Android ROM installed and have never flashed any other ROM. The only thing I have done is rooted my phone and everything was still working fine for a while after this.
The origin of the problem seemed to coincide with my internal becoming full and as a result user and system apps crashing all over the place on the phone.
What's worse, if I dial *#06#, I get "IMEI ", i.e. nothing just blank!
Please advise, I've only had this phone a few weeks, I'm worried this is irreversible!
Did you put your phone on CDMA only (in mobile data settings), by any mistake?
If not, you can always try flashing the stock ROM again (using Odin), resetting all settings.
GermainZ said:
Did you put your phone on CDMA only (in mobile data settings), by any mistake?
If not, you can always try flashing the stock ROM again (using Odin), resetting all settings.
Click to expand...
Click to collapse
The short answer is no, the long one is that I have no such options under the normal menus in GB 2.3.6, but I can get to these settings by accessing testing mode. My current setting is "WCDMA preferred" and I have never changed this before.
Well as my phone is under warranty I was thinking of unrooting it, doing a factory reset and if its still not working, taking it back to the shop and pleading ignorance before I try flashing it!
Unrooting your phone and taking it back to the shop sounds like the best way. If they say the warranty's void because you rooted it or flashed a firmware (ODIN counter) there's something you could try instead:
http://forum.xda-developers.com/showthread.php?t=1264021
http://forum.xda-developers.com/showthread.php?t=1308546
adrian816 said:
Unrooting your phone and taking it back to the shop sounds like the best way. If they say the warranty's void because you rooted it or flashed a firmware (ODIN counter) there's something you could try instead:
http://forum.xda-developers.com/showthread.php?t=1264021
http://forum.xda-developers.com/showthread.php?t=1308546
Click to expand...
Click to collapse
Ok thanks for that, yeah I took the phone back to the shop today, they've sent it off to their engineers, I'll post again when I get it back, they said a couple of weeks. I've never flashed it with anything so the ODIN counter should be at 0 and I unrooted it and done a factory reset on it before taking it back so hopefully they won't realize or can't realize it previously was rooted.
As far as I'm concerned the phone isn't even fit for purpose unrooted as the 200MB internal storage space is almost insufficient for updates to system apps, let alone any user apps, which is why I rooted it in the first place, to get full apps2sd functionality!
makeyourself said:
Ok thanks for that, yeah I took the phone back to the shop today, they've sent it off to their engineers, I'll post again when I get it back, they said a couple of weeks.
Click to expand...
Click to collapse
Got the phone back today, well a phone anyway. Apparently they couldn't repair the old one, so they replaced it with a new one.
What precautionary steps can I take to make sure this doesn't happen again. Is backing up my /efs folder enough with regards to securing IMEI information?
Also, I was thinking I should install some decent anti-virus software, anything else I should be doing to secure / protect a rooted Android?

[Q] So, am I screwed?

First, let it be known that I'm an idiot. I'm not new to the scene but I did some really noobish things and I've really screwed myself into a corner. So, first the background info. I have a Samsung Galaxy S Captivate, on Rogers (Canada), and I was running CM 10.2 (if I remember correctly). I set an alarm at night and woke up the next day to a recovery loop. I tried a number of ways to recover and reflash and one by one they failed, and piece by piece, I unmounted, erased and formatted everything (I know, I know). So I've got to an interesting point and I'm not sure what to do next as most method seem inaccessible. So, here's the list of broken things (that originally worked but I broke):
- No recovery/no ability to boot to recovery. All attempts cycle a boot loop.
- no internal sdcard. Can't see it or mount it. I've tricked my phone into thinking the external is the internal. This however, means I can't download anything or even copy anything to my phone. No cloud or internet files.
- no usb. I can connect and it recognizes it, but there's no sdcard (so it thinks) so there's no connection made.
- no download mode. Here's where it gets funny. I managed to flash a stock kernel with odin (YAY!) but I flashed an AT&T version and guess what? No download mode anymore. I've tried numerous combinations. I haven't yet tried a jig which is what I'm assuming everyone will say I have to do. I have no idea what I'm doing from there.
- almost unusable phone. I can't even make calls as the SIM is meant for Rogers, not AT&T
- my bank account. I'm short on cash so I can't just go and buy a new fancy phone even though I really, really want to.
I seem to be the prime example of what not to do and I brought it all upon myself. However, I've heard that as long as the phone turns on, there's hope. My goal is to get back to a CM firmware (or something else if you hate it) and maybe recover from the damage I've caused. So, am I screwed?
tl;dr Everything is broken and I'm stupid and desperate. :good:
Jig... to get into Download mode.
Then flash an Odin Stock firmware for Rogers here... http://forum.xda-developers.com/showthread.php?p=18371028 Post #4.
But not sure how that will work out for ya since ur internal memory is messed up.
---------- Post added at 12:18 PM ---------- Previous post was at 12:08 PM ----------
If all fails and u don't mind spending some money when ya can...check out mobiletechvideos.com for the repair.
I think the main problem here is failed internal memory. At one point the system lost the access to internal memory -> reboot -> can't read data -> reboot, etc. This is why you found the phone in a bootloop that morning. Android 4.3 (CM10.2) is still in beta, but it's not the cause of the failure. No software fix for a hardware problem, unfortunately. I know some people use external SD as internal, but I never needed to study this workaround.
Val D. said:
I think the main problem here is failed internal memory. At one point the system lost the access to internal memory -> reboot -> can't read data -> reboot, etc. This is why you found the phone in a bootloop that morning. Android 4.3 (CM10.2) is still in beta, but it's not the cause of the failure. No software fix for a hardware problem, unfortunately. I know some people use external SD as internal, but I never needed to study this workaround.
Click to expand...
Click to collapse
It's using the external as the internal right now. If I remove the external and try to boot, it will show the boot logo and shut down. Seems like the jig is the next step.

[Q]Help me with this particular N910T

Hey folks, first thread ever, I really need help with this troubled N910T, DOK2, Android 5.1.1
Whats wrong with this phone:
The contact app will stop everytime I open it, since contact app is combined into Phone app, so the Phone app will also stop everytime I click on it. However, the situation will be fixed if I change the locale to English. (The phone belongs to a Asian friend)
One of the instant message app, the Wechat, similar to Whatsapp Messager and Facebook Messager, will not receive any kind of notification, at all.
The phone's battery drop from 50% to 1% then turn off itself in minutes.
The last two problems may be unrelated issues to the first one, and that is not the main reason I'm really here. I have ODIN flashed the latest firmware over 10 times and all THREE of the problems still exist after all that.
And whats bothering me is that ODIN flash firmware WILL NOT FACTORY RESET this phone, that doesn't make any sense to me. Please let me know if I make a mistake about that, because every other phone or tablet I have worked on before will always be factory reset after flashing a OEM firmware.
I have also flahed TWRP and wiped everything from the System to the internal storage and reflash the firmware but the problem is still there.
sort of things have been done to the phone may have something to do with the problems:
installed the zips I got from this thread http://forum.xda-developers.com/not...pt-touchwiz-bloating-script-222-apps-t3258537
it debloated the phone.
the phone was lost in a rainy day, found again two days later. Remote lock and wipe preformed via Android Device Manager but the wipe process never go through.
Please let me know if the phone is worth saving at all, I have spent days in this phone fixing and researching for solution. I found no similar issue around here, and the phone is out of warranty.
Thank you and please let me know should I throw this thing away.
Battery needs to be replaced. Are you sure you flashed right firmware for 910t not 910t3?
darekz said:
Battery needs to be replaced. Are you sure you flashed right firmware for 910t not 910t3?
Click to expand...
Click to collapse
It's a N910T, and the ODIN sucessfully passed everytime but will not factory reset the phone,.
Have you tried going into recovery and factory reset it yourself
tat2messiah said:
Have you tried going into recovery and factory reset it yourself
Click to expand...
Click to collapse
Many times already.
If you haven't done so, you may want to do a clean install which means wiping system, data, dalvik and cache at least three times in custom recovery such as TWRP. Then you can try ODIN baseband, bootloader, rom and kernel (if rom doesn't contain one), custom recovery. Next you boot into customer recovery again and do a factory reset and that should do it. Let me know if that helps.
raynaran said:
Hey folks, first thread ever, I really need help with this troubled N910T, DOK2, Android 5.1.1
Whats wrong with this phone:
The contact app will stop everytime I open it, since contact app is combined into Phone app, so the Phone app will also stop everytime I click on it. However, the situation will be fixed if I change the locale to English. (The phone belongs to a Asian friend)
One of the instant message app, the Wechat, similar to Whatsapp Messager and Facebook Messager, will not receive any kind of notification, at all.
The phone's battery drop from 50% to 1% then turn off itself in minutes.
The last two problems may be unrelated issues to the first one, and that is not the main reason I'm really here. I have ODIN flashed the latest firmware over 10 times and all THREE of the problems still exist after all that.
And whats bothering me is that ODIN flash firmware WILL NOT FACTORY RESET this phone, that doesn't make any sense to me. Please let me know if I make a mistake about that, because every other phone or tablet I have worked on before will always be factory reset after flashing a OEM firmware.
I have also flahed TWRP and wiped everything from the System to the internal storage and reflash the firmware but the problem is still there.
sort of things have been done to the phone may have something to do with the problems:
installed the zips I got from this thread http://forum.xda-developers.com/not...pt-touchwiz-bloating-script-222-apps-t3258537
it debloated the phone.
the phone was lost in a rainy day, found again two days later. Remote lock and wipe preformed via Android Device Manager but the wipe process never go through.
Please let me know if the phone is worth saving at all, I have spent days in this phone fixing and researching for solution. I found no similar issue around here, and the phone is out of warranty.
Thank you and please let me know should I throw this thing away.
Click to expand...
Click to collapse

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