Installing official 2.1, when you have rooted 2.1

This is a discussion on Installing official 2.1, when you have rooted 2.1 within the Motorola Backflip Development & Hacking forums, part of the Motorola Backflip category; Has anyone updated a phone with the official 2.1 from moto, when they have a back flip that is rooted, and has J_r0dd v 1.7.6 ...

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Thread: Installing official 2.1, when you have rooted 2.1

  1. #1
    Junior Member bjrain's Avatar
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    Installing official 2.1, when you have rooted 2.1

    Has anyone updated a phone with the official 2.1 from moto, when they have a back flip that is rooted, and has J_r0dd v 1.7.6 installed?
    -------------------------------------------------------------------------------------

    I have recovered my phone to 1.5, now when it try's to update from my SD, it reboots the phone, and goes to J_r0dd recovery
    E:No signature
    E:Verifcation failed

    ALSO: now I'm stuck in a delayed boot loop... phone boots, then after 5 mins or so, it restarts when it sees the update is ready....

    trys to install and fails in J_r0dd recovery mode

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  3. #2
    Senior Member wdeydwondrer's Avatar
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    there is a file you can flash using rsdlite (search the forum here for the thread) and it's supposed to completely rewrite your phone back to factory.

    but once you go to 2.1, there's a load of warnings not to go back to 1.5...... this may be why.

  4. #3
    Super Moderator Dorian's Avatar
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    Quote Originally Posted by wdeydwondrer View Post
    but once you go to 2.1, there's a load of warnings not to go back to 1.5...... this may be why.
    VERY MUCH SO. 2.1 also flashes an updated recovery, and radio that are NOT compatible with 1.5, and that's where your boot loops are coming from. Radio firmware's cannot be downgraded without major issues.

  5. #4
    Junior Member bjrain's Avatar
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    Got it working,
    1. booted to J_r0dd v 1.7.6 recovery
    2. wipe phone
    3. downloaded new signed-j_r0dd.preclair.v1.0.3.zip
    4. copyed to root of SD
    5. re booted to J_r0dd v 1.7.6 recovery
    6. installed preclair.v1.0.3.zip

    ALL FIXED UP!

  6. #5
    Senior Member jmgib's Avatar
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    The problem you were running into is that you cannot install an official Motorola update with a custom recovery installed. What you could have done was to flash the stock recovery back (if you had it saved from before you flashed the custom recovery after you rooted your phone) or you could have used RSDlite to install the official 2.1 sbf image which would have installed the official Motorola 2.1 upgrade as well as replaced the custom recovery and unrooted your phone (which the official upgrade would do anyway).

    It looks to me following the steps you posted, you just ended up back where you started. Did you really want the official Moto 2.1?
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