General :: Securely Wipe Device Using Fastboot
Nov 28, 2013
I need to securely wipe any personal data on my phone and tablet.
On my Linux notebook I just zero the whole disk one or two times and reinstall the OS, with my Android devices it's a little bit more complicated.
Is there a way to securely wipe all my data, for example using fastboot?
Isn't there anything comparable to the good old
Code:
dd if=/dev/zero of=/dev/sdX
So that I can simply flash a new Android OS afterwards? Or at least for the data and cache partitions so that I just keep the OS
A method that definitely works is to just write a file to the data and cache partitions until there is no space left, but I wondered whether there is a "cleaner" solution?
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Sep 26, 2013
how to sanitize my phones' internal memory.
I have an HTC ONE, and a Samsung Galaxy S4 that I am trying to sell. I know that it's fairly easy to recover data from a wiped partition by using programs like "TenorShare Android Data Recovery", unless data has been written over them at least once.
I had taken pictures of some documents containing highly sensitive data with the phone, and would like to make sure that those documents are not recoverable by the next user.
Neither of them have the USB Mass Storage option in the settings, so I can't just use some secure wipe program.
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Apr 9, 2010
I'm writing an application wherein users will sometimes make orders through it. I want to give users the option to save their billing info (name, address, etc.) so that it can be quickly restored later if they want to make another order. The user will enter a password to secure the data. Obviously I can't just put this as a file on the device, as anyone can root/find the data. Is there a built-in Android method for storing secure data that is locked with a password? If not, what is a good place to start for storing this data securely using Java?
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Aug 1, 2012
The command "fastboot oem unlock" works on all android device?
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Apr 24, 2012
I deleted /system folder on my nexian cosmic journey. And now my nexian is stuck...
I try to using fastboot mode to flash recovery image, but my device seems not detected. I already installed the android composite driver, but when i use "fastboot devices" command, it shows (?) So how the heck to get my nexian back to normal?..
Or perhaps, if i just be able to put back the /system folder to its place again, it would be more easy to recover it... But how access the root when phone is like that?
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Apr 25, 2013
I have a generic (unbranded) tablet here. The user has used too many pattern attempts. I do a lot of these where I just wipe the device for people.
Sometimes I use key combos and sometimes i use ADB to boot into recovery and then simply select the "wipe data / factory reset option"
However, this tablet has no keys , no volume keys that is, so i used ADB to boot it into recovery which it did just fine.
How can i select "wipe data" when i can't use volume keys to select it? the touch screen is unresponsive in this mode too
I have tried
ADB SHELL WIPE DATA
but i get a permission denied error
I have tried running
ADB ROOT
but i get a "cannot run as root in production build" error
I have tried to root the tablet with super one click by short fuse but it crashes.
so i am basically asking is it at all possible to do a wipe data / factory reset on a device which is not rooted through ADB?
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Mar 3, 2013
I am trying to get my phone ready to sell and I would never sell a computer hard drive without writing zeros to the drive so that my data could not be recovered. I can find no way to do this with my phone.
Recovering data off of a factory reset android is extremely easy (this guy does it in like 5 minutes):(I cant post links so go to gottabemobile dot com and search for the article "Security Guru: Don't Sell Your Android Phone Until Turning it into Swiss Cheese".)
the only semi reliable way to securely erase data would be to do a whole disk overwrite or a whole disk encryption (single file deletion or free space overwrite completely fails on SSD drives).(Search Google for this paper "Reliably Erasing Data From Flash-Based Solid State Drives." This was a study done at UC San Diego.)
I realize that the newer android operating systems have encryption, but I cannot verify if it is whole disk encryption, and if it is not whole disk (encrypting all of the free space on the drive) it would be useless for files that are already deleted (or overwritten considering how wear leveling works, there can be multiple copies of the file spread out over the drive). I could do a whole disk overwrite and then load the operating system back on from download mode?
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Oct 1, 2010
I had to do a factory reset of my X after the 2.2 update. I am now not able to install the paid apps I got from the market. I have receipts on Google Checkout for them, but when I go to the market to get them, it only gives me the option to "Buy" it again as it takes me right to Google checkout. If I go to "Options" and then "My Downloads", the apps are not located there. Anyone else have this happen to them? How do I fix this without having to buy the apps again?
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Nov 30, 2010
When downloading a custom rom and the dev says wipe data/cache thats when im in recovery right? I see the options but do i do the data first and will it take me out of there and I gotta go back then wipe the cache? or will it just wipe data and then hit the back button and wipe cache and then hit the back button and hit install from sd?
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Jun 22, 2010
Can I wipe the dalvick without re-installing all the software?
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Oct 9, 2010
I currently use about 6 or 7 different passwords or pin numbers and often forgoet them.
Is there an app in which i can save all of my passwords for various things and then have one password for that app?
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Nov 17, 2011
how to flash a kernel using fastboot on os X. Therefore I've decided to add a new post about that on XDA for those who want/need to use fastboot on mac os X. Example given for a Sony Xperia ARC LT15i. This should work for any SE device but will need different vendor ID value for another Brand.
Installation
- Download and extract Android SDK (let's say on the Desktop for the rest of the explanation)
- Add "Android SDK Platform-Tools" with android SDK Manager
- Download fastboot for mac here http:[url]....
- extract it in android-sdk/platform-tools/
Configuration
Next you need to update the PATH for tools/ and platform-tools/ folder.
- Open Terminal app and type
Code:
nano ~/.bash_profile
- Add the following two lines and change the (username) with the name of your mac os X account name :
[code].....
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Jul 27, 2010
I have a native android library (.so) I am bundling with some application. In the native code I want to verify the signer/package name of the calling application.
The reason is, currently anyone can open up the .apk file take my .so file and use it to built their own applications.
Is there a way to securely identify the calling application from Java side? This could be package name, signature or anything else that can identify the Android application in a unique way.
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Jul 1, 2010
I have a user's name and password stored in their preferences.
How do I go about passing it back into the webview in a secure way?
I know if I do this it will work, but it just seems bad. There has to be a better way to post the variables.
webview.loadUrl("http://mysite.com?name="+username+"&password="+somepassword);
I've been looking for days and can't find anything, which make me think I'm missing something obvious.
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Jul 5, 2012
I have read other tutorials about the fastboot update command, but I do not understand how to make system.img from a zip Rom. How to install a Rom with fastboot? Cwm recovery can't read zip files for some reason.
HTC Explorer A310e
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Aug 1, 2013
I am trying to setup fastboot adb on my laptop.. i set it up on my pc a while back but my pc is windows 7 and my laptop is windows 8.. i read many things online.. watched youtube.. i cant do it!!
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May 12, 2012
I need go to the FastBoot menu becouse i need change the splash screen - boot image (bootlogo)
If i push + / - / power buttons, always i will go to the ClockWorkMode.
Huawei sonic U8650
Android 2.3.5
Root
ClockWorkMod
OC Kernel
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May 4, 2014
i have root access, and full adb, but i cant get fast boot even with adb commands. i attempted to flash a faulty a20 tablet i had via sd install. and i obviously had a damaged flash, anyhow it wiped the tablet clean, the backlight still lights up. i can turn it on and off, and i can boot the boot loader.
is there anyway out of this, i want to install a recovery, but with no flashboot....
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Nov 14, 2013
How I can use adb and fastboot on my computer. i
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Jun 16, 2013
What is the cause of that? From my knowledge they use the same driver? ADB cannot detect device but fastboot can... This occurs in both windows 7 and xp.
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Apr 12, 2010
Still waiting to get the desire..killer wait! (wanted the black one via orange but not happy with their loaded apps from what i've read)
anyway..just wondered if its possible to store media files securely in folders that i can keep separate/secure?
doesn't seem to be an app available...
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Jan 30, 2013
I have had my GNex since it was released. However, I just got a new computer. I am trying to set up everything again on my new computer. I got the drivers working to a certain extent. I can get adb to work, however fastboot does not work.
How to get fastboot working?
Screenshot showing adb clearly works prior to bootloader, but it stops working after going into bootloader. It seems to lose connection to my phone once it is in the bootloader. I tried this multiple times.
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May 22, 2014
My device only supports adb on recovery but its sideload. How to boot fastboot in recovery? Can't access fastboot without adb command. Volume keys not working.
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Apr 22, 2014
I have Xperia U and blocked Fastboot can i unlocked?
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Oct 14, 2013
My phone's usb works pretty much perfect, adb and the usb storage are working (HTC One M7). But when i do "adb reboot-bootloader" the pc just says "the usb device fails to enumerate or something like that. Everything works except for Fastboot and i dont know why. Has it something to do with Win 8.1? I never tried it on another machine before.
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Oct 21, 2011
I have "Android SDK tools" and "Android SDK Platform-tools" installed using the SDK Manager, and fastboot is nowhere to be found.The new r14 SDK seems to be missing this tool, what the replacement is?
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May 11, 2014
I tried flashing a font from romtoolbox lite using flashify but my phone only displays
"[470] fastboot mode started"
"[520] udc_start()"
I can't access download mode or recovery mode. What do i need to do? I also can't turn it off.
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Nov 20, 2012
I want to install ClockWorkMod Recovery on my Karbonn A18, i tried doing it using SP Flash Tool, but it gives various Errors, I want to know how can i get into FastBoot Mode in A18 so that i can install it through their ?
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Sep 25, 2013
Is any way to flash with low battery using fastboot.exe? I know that, I can use bat file to charge, but i would like flash with low battery. Is any way to bypass statement about Low battery?
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Dec 25, 2012
Any way to enable usb debugging via fastboot ? Flashing something may do it ?
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