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Root Lost root after 2.2? You can, I believe, revert to 2.1.

Discussion in 'Android Devices' started by humungus, Aug 20, 2010.

  1. humungus

    humungus Well-Known Member
    Thread Starter
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    May 23, 2010
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    I saw this on another form and I haven't tried it myself, so don't kill me if it's not right.

    Go into recovery (like you did to apply the update.zip). Wipe your cache. Perform a factory reset/date wipe or whatever it's called from within recovery. You _should_ (again I take no responsibility here) boot into 2.1 where you can root and then apply 2.2 update again.

    Good luck, and let us know if it does/doesn't work.

    EDIT: To revert to 2.1:

    1: Flash sbf. After this, you will bootloop.
    2: Get into recovery like you did when you updated to 2.2.
    3: Wipe cache.
    4. Factory reset.

    When you reboot you should be at stock 2.1. This would be useful if you needed to return the phone for warranty services, or if you need to reinstall 2.2 for some reason (like to gain root).
     

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    BLK MAJK likes this.
  2. lexluthor

    lexluthor Well-Known Member
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    May 15, 2010
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    Or just follow one of the many other existing threads where poeeple discuss how to easily get root back.
     
  3. Mojorisen

    Mojorisen Well-Known Member
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    Jan 6, 2010
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    Bottom of first post.
     
    humungus likes this.
  4. farrellcollie

    farrellcollie Well-Known Member
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    Unfortunately, I have not found a thread where it makes it sound simple enough for me. If anyone has info on how to do it without moving stuff from the bins, I would greatly appreciate hearing about it.
     
  5. humungus

    humungus Well-Known Member
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    Thanks, this didn't show up in search when I posted. I saw a number of people asking about this and didn't want to have to reply to them all. Also, thanks for being constructive.
     
  6. humungus

    humungus Well-Known Member
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    May 23, 2010
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    Get into recovery like you did when you applied the 2.2 update. Then, scroll to them wipe cache option and execute it. Next, scroll to the factory reset option and execute it. When you reboot you should be good.
     
    farrellcollie likes this.
  7. jkolbenson

    jkolbenson Active Member
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    May 17, 2010
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    After doing this will i have to set my phone up again? activate it? set up my gmail account/contacts/ apps/ settings?

    just curious?
     
  8. Dark Matter

    Dark Matter Well-Known Member
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    Jul 24, 2010
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    For fun I went from 2.2 to 2.1 via SBF. I got stuck on a boot loop.
    To fix:
    Took off battery.
    Put battery back on.
    Turned phone on holding Power + home button = Recovery.
    Did a factory reset and fixed my issue.
     
  9. dunamis

    dunamis Active Member
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    May 7, 2010
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    In my haste I did the update without moving or copying the update.zip file (I left the file in the root of the SD card). I just updated which worked but obviously lost root. SO, if I do the wipe cache option will this work for me too reverting back to 2.1?
     
  10. Piiman

    Piiman Well-Known Member
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    May 28, 2010
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    Hows this

    Wait a day of two I'm sure Bird will post how to root 2.2 soon.
     
  11. humungus

    humungus Well-Known Member
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    Yes, your phone will be like it was out of the box.
     
  12. humungus

    humungus Well-Known Member
    Thread Starter
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    May 23, 2010
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    I edited the OP with instructions. You'll need to flash the sbf file. You'll then bootloop. Pop the battery and reinsert. Then get into recovery. Wipe cache and then factory reset. Then you'll be in 2.1 and can root properly and reinstall the 2.2 zip (or you can download the Bootstrap and Rom Manager apps and install through Rom Manager).
     
    dunamis likes this.

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