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Thread: [TOOL] ezSBF

  1. Droid Ninja
    themib's Avatar
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    no you can not downgrade from 621
    nor can you root it

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  2. Droid Newbie
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    Quote Originally Posted by strelock View Post
    Have you been able to find an answer to this yet? I too have installed 621 before realizing that it cannot be rooted or downgraded. Does this ISO work to take a DROID 2 version 4.5.621.A955.Verizon.en.US back to froyo? Or does this also brick the phone? I have not tried anything after I mistakenly downloaded the 621 SBF file offered without warning on XDA forums. Guess I should have read the entire forum first since they could not type out a simple "Do not upgrade if you want root". I am hoping to be able to go to froyo, then install the 2.3.3 update from zip, root it, and then block the 2.3.4 621 update. Thanks for your help!
    I've been reading everything I can find about the 621 update on Droid 2. The consensus seems to be that NO, you can't downgrade at all (especially not back to Froyo) because 621 has a signature on the system code group designed to prevent downgrades. So far nobody has hacked it (to my knowledge). On the Droid X there's a long workaround to downgrade and root (see what I posted previously regarding Milestone X), but nothing for the Droid 2 yet.

    The 4.5.621 SBF in question IS the official Verizon system image. If you soft-brick your phone while trying to flash another ROM, this SBF will restore you to 621 exactly as if you had taken the OTA update (so you'll again be stuck on 621, but at least your phone will work). It will take time for the firmware hackers to reverse-engineer it (hopefully there's enough interest and they haven't entirely moved on to newer phones).

    vinylfreak89 on RootzWiki seems to be actively working to root 621 on Droid 2, though he's looking for help since he doesn't actually own the device (he used a friend's). There are rumors that people have kept root using RootKeeper, but only if the set it up before the OTA update. Unfortunately that doesn't help us until someone can figure out exactly how it works.
    Last edited by MoonShark; 05-31-2012 at 08:28 AM.
  3. Senior Droid
    synctek's Avatar
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    My intentions were to deploy the (1KDStaz_D2_2.3.20.iso) and go backwards to Froyo and then root.
    If I read this right, you cannot SBF back to Froyo or an earlier version of Gingerbread if you have the latest OTA (D2) right?
    All that and it's a phone too!!!!
  4. Droid Ninja
    themib's Avatar
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    if you have 2.3.4/4.5.621, you can not go back
    [ROOT] Framaroot, a one-click .apk to root
    Droid 2 (a955), Droid 2 Global (a956), R2D2 (a957), & Droid X (MB810)

    sd_shadow's (themib) [Collection] of Links: FAQs, Guides, Rooting, SBFs, ROMs... - sites.google.com

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  5. Senior Droid
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    The D2 I have has 2.3.4 Build 4.5.1_57

    Can I SBF to an older version?

    Quote Originally Posted by themib View Post
    if you have 2.3.4/4.5.621, you can not go back
    All that and it's a phone too!!!!
  6. Droid Ninja
    themib's Avatar
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    4.5.601 is the system version
    no you can not go back

    edit: sorry meant 621

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    Last edited by themib; 06-21-2012 at 12:16 AM.
    [ROOT] Framaroot, a one-click .apk to root
    Droid 2 (a955), Droid 2 Global (a956), R2D2 (a957), & Droid X (MB810)

    sd_shadow's (themib) [Collection] of Links: FAQs, Guides, Rooting, SBFs, ROMs... - sites.google.com

    Always in motion is the future
  7. Senior Droid
    synctek's Avatar
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    Mine says 4.5.621.A955 - I assume that is more recent and the same still applies; there is currently no way to root and I cannot SBF back to an older version??
    All that and it's a phone too!!!!
  8. Droid Ninja
    themib's Avatar
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    no known root,
    motofail method is the newest, no one has reported that it had worked for d2,
    you could try that http://vulnfactory.org/blog/2012/02/...ty-experiment/

    and there is a thread started as a unbrick thread, but turned in to a rooting discussion, nothing yet but you may want to check http://rootzwiki.com/index.php?/topi...ricking-Method
    Creating a Droid 2 Unbricking Method
    Sent from my DROID X2 using DroidForums
    [ROOT] Framaroot, a one-click .apk to root
    Droid 2 (a955), Droid 2 Global (a956), R2D2 (a957), & Droid X (MB810)

    sd_shadow's (themib) [Collection] of Links: FAQs, Guides, Rooting, SBFs, ROMs... - sites.google.com

    Always in motion is the future
  9. Senior Droid
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    Thanks for the info.
    All that and it's a phone too!!!!
  10. Droid
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    1KDS likes this.
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