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[Q] secure erase of /data, remove cwm

OP cxvbxcbxcvbxcb

14th April 2014, 07:12 PM   |  #1  
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Hey there. I have to send my Tipo in for a repair. Afaik, warrenty is void, if no stock rom is used.

questions now are:
how can I securely delete the phone, especially /data?
with CM 10/Android 4.1, internal memory is not available as USB mass storage device and therby cannot be deleted via a PC afaik
how do I restore stock rom? more precisely, I have a backup of the stock rom, but this contains cwm. this should be removed obviously?!
16th April 2014, 10:48 AM   |  #2  
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Quote:
Originally Posted by cxvbxcbxcvbxcb

Hey there. I have to send my Tipo in for a repair. Afaik, warrenty is void, if no stock rom is used.

questions now are:
how can I securely delete the phone, especially /data?
with CM 10/Android 4.1, internal memory is not available as USB mass storage device and therby cannot be deleted via a PC afaik
how do I restore stock rom? more precisely, I have a backup of the stock rom, but this contains cwm. this should be removed obviously?!

i have got one solution for you if it works
  1. relock your bootlader
  2. flash a new firmware
  3. root it through unlockroot
  4. set up cwm
  5. then if you are lucky, you will reach your backup
  6. if you can reach it, move it to your pc
  7. then flash a new firmware to your mobile
  8. delete internal storage if you can
  9. and send it for repair
17th April 2014, 08:40 AM   |  #3  
OP Junior Member
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well, I already have backupped all the data.

now I flashed stock from an ftf image, relocked the bootloader, wrote a file of almost full size to the internal memory and then used secure wipe twice to overwrite free space.
I hope this is sufficient?!
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