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Root Downgrade to root?

Discussion in 'Android Devices' started by Eris Lover, Nov 22, 2010.

  1. Eris Lover

    Eris Lover Well-Known Member
    Thread Starter
    58

    Jan 20, 2010
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    New Mexico
    Does anyone know if you have already accepted OTA could you flash the older version of 2.2RUU to downgrade yourself and then use unrevolked to root?
     

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  2. sdrawkcab25

    sdrawkcab25 Well-Known Member
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    No, doesn't work for some reason.
     
  3. Spectrumpigg

    Spectrumpigg Well-Known Member
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    Aug 11, 2010
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    Pulling this from XDA, I am passing along, if you need further help, look at next post!


    * NOT RESPONSIBLE IF YOU BORK YOUR PHONE*
    here's the basics:
    1. get the RUU for 3.21.605 from shipped-roms.com, and extract the rom.zip file from the RUU, rename to PB31IMG.zip and put on the root of your sd card.
    2. download the HTC Incredible downgrade package from the cyanogen mod wiki
    3. put the downgrade files in your android sdk tools folder, and push them to your phone. you don't need the rageagainstthecage exploit, because we use z4root later on.
    Code (Text):
    1. adb push flash_image /data/local
    2. adb push mtd0.img /sdcard/
    1. download z4root from the market, and obtain temporary root by running it on your phone
    2. connect to the phone via adb, and type:
    Code (Text):
    1. su
    3. mount system as rw with this commmand:
    Code (Text):
    1. mount -o remount,rw /dev/null /system
    4. follow these instructions from the cyanogen mod wiki (in adb shell):
    Code (Text):
    1. cd /data/local
    2. chmod 0755 /data/local/flash_image
    3. cd /data/local
    4. ./flash_image misc /sdcard/mtd0.img
    5. reboot bootloader
    when your phone re-boots, you will have to select to go into bootloader, and then select to apply the update.
    it will look like it fails the first time, but it will go through the process again and succeed.
    If people need more detailed instructions, I can post more precise directions later.
    i just had success with this. cool :)
    again, I did not write any of these exploits, just found the right order to do them in to downgrade from the latest OTA, even with s-on
     
  4. Spectrumpigg

    Spectrumpigg Well-Known Member
    43

    Aug 11, 2010
    104
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    43
  5. sdrawkcab25

    sdrawkcab25 Well-Known Member
    423

    Aug 5, 2010
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    Glad they found a way around it, unrevoked will be releasing an update to the unrevoked tool soon, so probably will be best for most people to wait for that.
     

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