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Thread: Direct root method for Android 2.3.4 on D2G,D2,DX, and DX2

  1. Junior Droid
    bhigham's Avatar
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    #1

    Direct root method for Android 2.3.4 on D2G,D2,DX, and DX2

    I posted this on Rootzwiki, but figured I would post it here as well, and hopefully it is helpful for someone.
    Since all these devices seem to be vulnerable to the same exploit found by phifc at
    New root method for stock 2.3.4 (621/622) found (Droid2, R2D2) - Droid 2 / R2D2 / Milestone 2 / Droid 2 Global - RootzWiki
    I have assembled rooting methods for all of them in EzSbf style CD. I have tested it on my D2G, and the same method has been tested by multiple users on the D2/R2D2, and has worked fine.
    Credit for this method go to phifc, djrbliss, and the others who developed the method.
    I have simply taken the method, and assembled the tools.
    Credit for the idea behind the CD method should go to 1KDS, as I have mostly patterned this CD after his method.
    Credit should also go to Skrilax_CZ, as without his Motorola Android Firmware (De)packer, we wouldn't be able to have a 55 meg CD that covers multiple devices.
    Special thanks also to themib for testing and troubleshooting on the DroidX2. In fact, since I don't have a DX2, he actually did a majority of the work in finding a method that would work (the method for the D2 and D2G doesn't quite work), and then we worked together to get it assembled and working.

    From what I can see, it should work for the Droid X as well, and Western Senju Ero-sannin on the rootzwiki DroidX forum reports that is has worked for him.
    This CD is for the D2,R2D2, D2G, and DX on Android version 2.3.4, and the DX2 on 2.3.5.

    Of course, like all other things here, I have done my best on this, but there are no guarantees, and anything you do on your phone is at your own risk.
    So, without further ado, here is a link for the CD
    Droid2_D2G_DX_DX2-RootCD-2012.iso
    and the md5 is
    7baee9c34f6ef7ad0b4fa219ae387c68
    themib likes this.
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  3. Droid Ninja
    themib's Avatar
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    #2
    updated many times see change log

    created by phifc modified by bhigham

    3 options mirror links posted Magic MD5 Root 2.3.4 for D2, R2D2, D2G, DX and 2.3.5 for DX2 - Google Docs
    Multi-Device Root (54mb)
    Droid2_621_SBF-and-RootCD.iso (213mb)
    Droid2_R2D2_A957_2.3.4_SBF_and-or_RootCD.iso (250mb


    How this works
    Originally Posted by phifc
    There's an exploit in loadpreinstall.sh. It compares md5 sum files of preinstalled apps and if they're different, copies the md5 to the local cache. The preinstall just has an empty file in app/ so it will parse the md5 for it. Instead of an md5 sum, it contains a local.prop that allows adb root shell. So the system thinks it's copying the md5sum to the cache when it bounces off the symlink and overwrites the /data/local.prop, giving adb root on next reboot
    what is ezSBF?
    original [TOOL] ezSBF (not for 2.3.4)

    Quote Originally Posted by 1KDS View Post
    Don't let the word Linux scare you, this is just a cd you burn, nothing installs to your pc. Once you burn this CD you are ready to SBF flash anywhere you have a computer, no net connection needed to download any files.

    This is an .iso file. It is a complete Linux operating system that you will download, burn to CD (or USB) then boot your pc from CD or USB, this allows your pc to reboot into a different operating system.
    Quote Originally Posted by 1KDS View Post
    Instructions (Mac):
    Download .iso
    Use Disk Utility (built in) to burn iso file to a CD (instructions)
    Shut computer down
    Hold c key, push power and hold c until you see the Linux OS start
    Hit enter at the yellow "boot baby... boot" screen
    You will see yellow dots for 3-5 minutes then the script will start

    Instructions (Windows):
    Download .iso
    Burn iso image to a disk (Instructions, Windows 7 - Vista and XP) or (Load to a USB flash drive)
    Reboot PC
    Hit F12 (sometimes F8 or esc) during boot to go to boot menu (possibly google search how to boot your specific pc from CDROM)
    Select boot from CDROM (or USB if you used a flash drive)
    Hit enter at the yellow "boot baby... boot" screen
    You will see yellow dots for 3-5 minutes then the script will start

    Live USB Instructions (Windows):
    (Instructions from pendrivelinux.com)(thanks)
    Download
    UNetBootin for Windows
    Download your favorite Linux ISO
    Double click the Unetbootin Executable to start the program
    (1) Click the Diskimage radio box
    (2) browse to select your ISO
    (3) Set your target USB drive
    (4) click OK to start the creation



    (5) After the USB drive is done select reboot.
    (6) During boot enter the boot menu and change USB to boot first, save and reboot.
    (7) When booting from UNetbootin select SliTaz


    ________________________________________________

    You will now be in the script and ready to flash.

    select D2 for multi device root cd or /select root for the Droid2_621_SBF-and-Root CD
    don't use numbers on right side of you keyboard, just use the ones above qwerty

    turn phone on, connect to pc with usb cable

    on phone check usb debugging (settings/apps/development)
    on phone select charge only usb mode

    on pc press continue
    program will use adb to push
    Code:
    data/local.prop /data/preinstall_md5/magic.md5
    program will prompt you to
    manually reboot phone to bootloader
    program will flash repacked sbf (less than 50mb)
    program will reboot twice, very important (reboot just replaces the local.prop, but the old local.prop is still in memory, till second reboot)
    adb pushes su,superuser, and busybox
    program will reboot to recovery,
    manually press both volume buttons when you see !, triangle, & android andy
    manually select wipe cache
    manually select reboot
    rooted

    error info
    when running program you may see these errors
    rm failed for /data/preinstall_md5/magic.md5 no such file or directory
    no root.img.gz no such file or directory
    rm failed for /data/preinstall_md5/magic.md5 read only file system


    that is fine, it will still work

    by bhigham -One item of note with this CD, it does require at least 1GB of RAM in order to work properly. Also, if you only have 1GB of memory, and you need to both SBF and root your phone, it will be necessary to reboot the computer after flashing the .629(or .621)SBF. If you are unsure of the amount of RAM that you have, go ahead and reboot to be on the safe side.
    Also, I noticed that I neglected to put instructions for putting your phone in bootloader in the SBF Step. To put your D2G(/D2) in bootloader mode, power down and power on while either holding both volume buttons, or the up arrow on the keyboard.
    if you plan on creating nandroid backups or flashing roms read
    [HOW TO] Install/Use Droid 2 Bootstrap

    Band unlock Droid 2 Global with 629 instructions


    original thread New root method for stock 2.3.4 (621/622) found (Droid2, R2D2) - Droid 2 / R2D2 / Milestone 2 / Droid 2 Global - RootzWiki
    [QUOTE]
    edit:
    02 Oct 2012 added mac info and ezSBF and root cd
    09 Dec 2012 major rewrite
    Last edited by themib; 12-09-2012 at 06:31 PM.
    [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
  4. Junior Droid
    Newenglandguy's Avatar
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    #3

    Newbie has some dumb questions

    Want to root my phone, but I don't quite think I fully understand the full process. Do I have to burn the ISO file to a CD and boot off of it? I'm not clear on what the steps are. Sorry, for what most of you may be a dumb question, but I don't want to mess this up. Never rooted a phone before. I have a Droid 2 that is running 2.3.4.

    Oh, and what does it mean "you need to SBF your phone"?

    Thanks
  5. Droid Ninja
    themib's Avatar
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    #4
    the ezSBF & root for 2.3.4/4.5.621 iso has two option
    1 .sbf is a recovery system file, use to restore phones firmware
    2 and magic md5 root

    the iso file needs to be mounted to cd or usb drive, with an iso burner or UNetBootin (usb drive)
    reboot pc from cd or usb, a linux program runs
    follow on screen instructions

    both the SBF and root options are very safe, if you have a problem, reread instructions or try on a different pc
    each option only takes about 10 mins

    edit: you only need to SBF, if phone is not running correctly, or won't boot past the m screen

    this iso has been used by many people
    Magic MD5 Root 2.3.4 for D2, R2D2, D2G, DX and 2.3.5 for DX2 - Google Docs
    Last edited by themib; 11-09-2012 at 07:27 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
  6. Junior Droid
    Newenglandguy's Avatar
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    #5
    themib - thanks for your reply!

    Now I have some questions on some of the steps:

    reboot phone to bootloader - how do you reboot to bootloader - are there certain keys you must hold down?
    flash repacked sbf (less than 50mb) - is this a step on the ISO CD that I have to do?
    reboot twice, very important (reboot just replaces the local.prop, but the old local.prop is still in memory, till second reboot)
    adb pushes su,superuser, and busybox - is this something that happens when I run off the CD?
    reboot to recovery, wipe cache - how do you reboot to recovery mode - again, are there certain keys you must hold
    down?

    reboot normally

    Thanks
  7. Droid Ninja
    themib's Avatar
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    #6
    how do you reboot to bootloader

    bootloader mode, power down and power on while either holding both volume buttons, or the up arrow on the keyboard.
    flash repacked sbf (less than 50mb) - is this a step on the ISO CD that I have to do?
    no this part of the root program
    adb pushes su,superuser, and busybox - is this something that happens when I run off the CD?
    yes other than manually booting to boatloader, the root program is automatic
    - how do you reboot to recovery mode
    phone should reboot to recovery automatically, if it doesn't
    read The DROID Wiki

    • Power down the phone.
    • Slide out the keyboard.
    • Press and hold the X button on the physical keyboard.
    • Press the lock/power button.
    • Once you see a warning sign with an android robot appear, press Volume Up and Down buttons.

    • Android system recovery:
    • Use volume keys or arrow keys to highlight; power or enter button to select
    • Options are
    • reboot system now
    • apply sdcard:update.zip
    • wipe data/factory reset
    • wipe cache partition
    Last edited by themib; 11-09-2012 at 08:46 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
  8. Junior Droid
    Newenglandguy's Avatar
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    #7
    Themib - thanks again. Meant to ask a few more questions and I think I'll be confident enough to try to root it. Does that ISO image CD I will be burning have the things on there that I'll need to SBF my Droid 2 should the root not work? Again, it sounds like SBF is a way to restore to factory settings. Do I have that correct? What does the acronym SBF stand for?

    Thanks
  9. Junior Droid
    Newenglandguy's Avatar
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    #8
    Themib - thanks again. Meant to ask a few more questions and I think I'll be confident enough to try to root it. Does that ISO image CD I will be burning have the things on there that I'll need to SBF my Droid 2 should the root not work? Again, it sounds like SBF is a way to restore to factory settings. Do I have that correct? What does the acronym SBF stand for?

    Thanks
  10. Droid Ninja
    themib's Avatar
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    #9
    What does the acronym SBF stand for
    .sbf is the file extension, sometimes called a system boot file, is an image which restores the phone's firmware

    need to SBF my Droid 2 should the root not work?
    rooting shouldn't cause any problems,
    but it's not uncommon for a custom rom install to to fail, requiring to flash an sbf, to fix, and have to reroot
    [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
  11. Droid Ninja
    themib's Avatar
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    #10
    you wrote you have D2 2.3.4 but this is a D2G thread
    so check
    in settings/ system / about phone/ system version
    D2 4.5.621 use ezSBF & Root 2.3.4/4.5.621
    R2R2 4.5.622 use ezSBF & Root 2.3.4/4.5.622
    D2G 4.5.629 use ezSBF & Root 2.3.4/4.5.629


    or Droid2_D2G_DX_DX2-RootCD-2012.iso
    has options for those devices, only 60mb, but does not include .sbf files

    Last edited by themib; 11-09-2012 at 11:31 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
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