0
[TIP] Unlock bootloader without loss of data (before 30O only)

  1. Mr. Lambert
    Froyo Aug 23, 2014

    Mr. Lambert , Aug 23, 2014 :
    Don't know if this is known, but I used and it worked !

    Simply use any guide out there to unlock.
    But before that you can -

    1- Boot into a custom recovery from your PC with using command
    fastboot boot recovery.img
    (this will leave the stock-recovery intact as youre infact not flashing the custom recovery to
    your phone)
    2- Backup you current ROM
    3- Backup your 'Internal Storage' to your PC or via OTG
    4- Unlock your bootloader
    5- Go through setup or skip setup
    6- Restore/place your backed up ROM on the 'Internal Storage'
    (entire TWRP folder or Clockworkmod folder)
    7- Repeat step 1
    8- Now restore your backup (you made in step 2)
    9- Boot your phone and Restore/place your backed up 'Internal Storage' back to the phone
    10- Optionaly reboot once

    You now have an unlocked bootloader and everything back the way it was.
    I needed this to install a custom kernel :)
     
    Last edited: Aug 23, 2014

    #1
  2. Elrey311
    Ice Cream Sandwich Aug 23, 2014


    #2
    Mr. Lambert likes this.
  3. youngchaos
    Jelly Bean Aug 23, 2014

  4. trechoy
    Ice Cream Sandwich Aug 23, 2014

    trechoy , Aug 23, 2014 :
    I don't think you can boot into a custom recovery with the new bootloader.
     

    #4
    PLPeeters and Mr. Lambert like this.
  5. Mr. Lambert
    Froyo Aug 23, 2014

    Mr. Lambert , Aug 23, 2014 :
    Via PC ?
    Can someone confirm ? I'm stil on 25R. I'll update the OP.
     

    #5
  6. arkadius
    Jelly Bean Aug 23, 2014


    #6
    Mr. Lambert likes this.
  7. Mr. Lambert
    Froyo Aug 23, 2014

    Mr. Lambert , Aug 23, 2014 :
    Thanx. That sux though. And sadly I can't update/edit the OP anymore :(
     

    #7
  8. PLPeeters
    KitKat Aug 23, 2014

    PLPeeters , Aug 23, 2014 :
    Updated your title for you ;) Is it fine like this? :)
     

    #8
    Mr. Lambert likes this.
  9. Mr. Lambert
    Froyo Aug 23, 2014

    Mr. Lambert , Aug 23, 2014 :
    Great, thanx so much for that ! :)
     

    #9
    PLPeeters likes this.
  10. J@CK3r
    Eclair Sep 11, 2014

    J@CK3r , Sep 11, 2014 :
    Sorry just too clarify this method is till usable if our device is on 25R? I just received mine and I want to unlock the bootloader and root before I update (in order to keep apps and data etc. which I've set up)
     

    #10