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[Q] Going to sell S4 - Wipe Phone but Keep Unlocked Bootloader

OP mryank9

5th August 2014, 03:14 AM   |  #1  
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So I am going to sell my MDK Galaxy S4, currently running Hyperdrive 17.1. I want to keep the unlocked bootloader and root and just have fresh install of HD 17.1 but want to wipe everything off the phone (personal data, etc). Is there an easy way to do this?
5th August 2014, 05:06 AM   |  #2  
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Pretty sure there should be an option in which ever recovery you are using for deleting ALL data, including data/media, which is your data. If not, you could just Odin back to MDK and call it a day.
5th August 2014, 02:12 PM   |  #3  
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Quote:
Originally Posted by thesoldier

Pretty sure there should be an option in which ever recovery you are using for deleting ALL data, including data/media, which is your data. If not, you could just Odin back to MDK and call it a day.

Right, but would doing that delete my ROM, etc, etc? Don't want to brick anything
5th August 2014, 04:05 PM   |  #4  
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Quote:
Originally Posted by mryank9

Right, but would doing that delete my ROM, etc, etc? Don't want to brick anything

As long as you don't format /system you will be fine. In TWRP under wipe there's a button that says "format data" which is what you're looking for. Even if you were to accidentally delete your ROM there's Odin.
5th August 2014, 08:43 PM   |  #5  
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Quote:
Originally Posted by thesoldier

As long as you don't format /system you will be fine. In TWRP under wipe there's a button that says "format data" which is what you're looking for. Even if you were to accidentally delete your ROM there's Odin.

"format data" wipes the system partition. What I've always done when selling Samsung devices is to use Odin. In your case, use Odin full wipe MDK tar file. Then reroot it (towelroot should work, the MDL prerelease kernel & motochopper are probably not necessary anymore) and use TiBu to freeze SDM, so the phone doesn't OTA update. The only way you can truly get rid of data anyway is to overwrite the physical storage that previously held that data. Just "wiping" only deletes the hooks that find and unscramble the actual data, thus all of that information is still recoverable until overwritten.
6th August 2014, 04:28 AM   |  #6  
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Quote:
Originally Posted by joshm.1219

"format data" wipes the system partition. What I've always done when selling Samsung devices is to use Odin. In your case, use Odin full wipe MDK tar file. Then reroot it (towelroot should work, the MDL prerelease kernel & motochopper are probably not necessary anymore) and use TiBu to freeze SDM, so the phone doesn't OTA update. The only way you can truly get rid of data anyway is to overwrite the physical storage that previously held that data. Just "wiping" only deletes the hooks that find and unscramble the actual data, thus all of that information is still recoverable until overwritten.

Feeling dumb but do you have a link on how to do this?
6th August 2014, 04:52 AM   |  #7  
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Format Data- Get into recovery, hit wipe tab, hit format data, type in yes and hit enter.

Use Odin to flash MDK full wipe tar file- Here's a guide on how http://forums.androidcentral.com/spr...in-3-07-a.html , use this file http://forums.androidcentral.com/spr...in-3-07-a.html

Root- www.towelroot.com It's the easiest root method I've ever done. Simple apk install. I've never used it on MDK because it wasn't available the last time I had to root this build. Should work though. If it doesn't follow this http://forum.xda-developers.com/show....php?t=2290798

Use TiBu to freeze SDM- Titanium Backup is an app in the play store... Use this guide http://www.google.com/url?sa=t&rct=j...72197243,d.aWw
Now that you understand how to do it, look for SDM and freeze it. It will stop the phone from trying to take an OTA update.

If you want to get a custom recovery back on there, use flashify (app in play store) to flash the latest TWRP image.
Last edited by joshm.1219; 6th August 2014 at 05:29 AM.
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6th August 2014, 02:25 PM   |  #8  
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Quote:
Originally Posted by joshm.1219

Format Data- Get into recovery, hit wipe tab, hit format data, type in yes and hit enter.

Use Odin to flash MDK full wipe tar file- Here's a guide on how http://forums.androidcentral.com/spr...in-3-07-a.html , use this file http://forums.androidcentral.com/spr...in-3-07-a.html

Root- www.towelroot.com It's the easiest root method I've ever done. Simple apk install. I've never used it on MDK because it wasn't available the last time I had to root this build. Should work though. If it doesn't follow this http://forum.xda-developers.com/show....php?t=2290798

Use TiBu to freeze SDM- Titanium Backup is an app in the play store... Use this guide http://www.google.com/url?sa=t&rct=j...72197243,d.aWw
Now that you understand how to do it, look for SDM and freeze it. It will stop the phone from trying to take an OTA update.

If you want to get a custom recovery back on there, use flashify (app in play store) to flash the latest TWRP image.

Thank you so much..for the using Odin step, the two links are the same. Was there a second link for the file?
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6th August 2014, 02:32 PM   |  #9  
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Quote:
Originally Posted by mryank9

Thank you so much..for the using Odin step, the two links are the same. Was there a second link for the file?

Oops here you go: http://forum.xda-developers.com/show....php?t=2289325

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