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Thread: how to root 4.5.621/622 for Droid 2 a955 & Droid R2D2 a957

  1. Droid Ninja
    themib's Avatar
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    #1

    ezSBF and Root for D2 2.3.4/4.5.621

    updated many times see change log


    [ROOT] Framaroot, a one-click .apk to root
    I have verified it works with these Motorola devices running android 2.3.4
    Droid 2 (a955), Droid 2 Global (a956), R2D2 (a957), & Droid X (MB810)

    just download, allow unknown sources, install, open, select top root method (Gimli), reboot phone, done, no pc needed






    ----------------------------------------------------------------------------------------------------------------------------



    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
    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



    if you plan on creating nandroid backups or flashing roms read
    [HOW TO] Install/Use Droid 2 Bootstrap

    CM7
    droid2-cm7-gb-20120611-spitemare-.621.zip(with 601 kernel check removed)
    100mb md5: F483935C9F493B26BB2008EA9223D108





    Older Methods see instruction by phifc below
    windows Batch file (uses rsd lite)
    Linux batch file (adb and sbf_flash)
    Linux manual (adb and sbf_flash)

    from original thread @ New root method for stock 2.3.4 (621/622) found (Droid2, R2D2) - Droid 2 / R2D2 / Milestone 2 / Droid 2 Global - RootzWiki

    Posted by phifc (OP)

    This is for original Droid2 and Droid R2D2. If you have issues b
    ooting after root, check the end of this post.

    I've been working on root for a few days after having to flash stock 621. I've tested this with my R2D2 running 621.

    7/25/2012 - Thanks to beh for putting together an EzSBF cd for this! Just burn, boot from CD and follow the directions. It can flash to the stock 621 update for those that want the stock Gingerbread image, then gives you the option to root if you like. You can also create a bootable USB stick with the iso using UNetbootin - Homepage and Downloads

    Droid 2 621 EzSBF with root option
    The MD5 is
    e50bc7914c4852ca32e9f08f7744c056

    The instructions below work, but beh's EzSBF is far superior.

    If you want to use CyanogenMod 7.2 after root with this method check this post.

    I've been working on root for a few days after having to flash stock 621. I've tested this with my R2D2 running 621.

    Windows
    Install Motorola drivers and RDS Lite.
    Get RootDroid2 file, extract folder, run RootDroid2.bat and follow the instructions.
    You'll have to flash the phone as part of the process.

    Linux (Easy way)
    You'll need adb and sbf_flash.
    1) Download the RootDroid2 file, extract it wherever you like.
    2) Using adb enter
    Code:
    adb shell ln -s /data/local.prop /data/preinstall_md5/magic.md5
    3) Flash using sbf file in download.
    4) Reboot
    5) adb shell will now be root

    Linux (Long way)
    What you need: Stock SBF (thanks to droid-developers.org), custom preinstall.img, adb (from android sdk), and sbf_flash

    1) Enable USB debugging on your phone and send this adb command:

    Code:
    adb shell ln -s /data/local.prop /data/preinstall_md5/magic.md5
    2) Unpack the custom preinstall file, then reboot your phone into flash mode by holding the up arrow on the keypad. Then send the custom SBF file with sbf_flash:
    Code:
    sbf_flash -r --preinstall preinstall.img <stock sbf filename>
    (For example, I used 1FF-p2a_droid2_cdma_droid2-user-2.3.4-4.5.1_57_DR4-51-120117-release-keys-signed-Verizon-US.sbf so the command is "sbf_flash -r --preinstall preinstall.img 1FF-p2a_droid2_cdma_droid2-user-2.3.4-4.5.1_57_DR4-51-120117-release-keys-signed-Verizon-US.sbf")

    3) Wait for phone to boot after flashing, then reboot again one final time.
    4)
    Code:
    adb shell
    should give you a root prompt (# instead of $)

    5)Send superuser utils from Superuser

    Code:
    adb shell mount -o remount,rw /dev/block/system /system
    adb push su /system/bin/su
    adb shell chmod 4755 /system/bin/su
    Code:
    adb push Superuser.apk /system/app/Superuser.apk
    adb shell chmod 644 /system/app/Superuser.apk
    adb shell mount -o remount,ro /dev/block/system /system
    Thanks to Dan Rosenberg (djrbliss) and those that helped him researchhttp://vulnfactory.o...ng-the-droid-3/ for ideas

    for basic SBF and RSD lite info read The DROID Wiki

    First, where do i download all these tools like motorola drivers and RSDlite? Do i put them on my phone or my PC?
    use pc, links are baked into text just click on name of file
    moto drivers USB and PC Charging Drivers - Motorola Mobility, Inc. USA
    ...Where do i enter this adb command?...
    abd in command prompt start/search cmd.exe
    ...What version of software will be on my droid 2...
    same version, rooting alone doesn't change that, rooting just gives you access to change system files/settings



    My Links
    Magic MD5 Root 2.3.4 for D2, R2D2, D2G, DX and 2.3.5 for DX2 - Google Docs

    sd_shadow's [Collection] of Links: FAQs, Guides, Rooting, SBFs, ROMs... - Google Docs


    Changelog
    edit: added multi slitaz img and FAQ
    30 aug 2012 add more detailed instructions for muti device cd
    02 Oct 2012 added mac info
    10 Oct 2012 added error info
    26 Oct 2012 added mirror
    18 Nov 2012 added MD5 & SHA-1 Checksum Utility and R2D2 ezSBF link
    02 Dec 2012 changed download links
    09 Dec 2012 major rewrite
    26 April 2013 added Framaroot
    27 april 2013 added framaroot video
    Last edited by themib; 04-27-2013 at 09:31 AM. Reason: edited many times see changelog
    joeblow789 and adambrown like this.
    [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
  2. Junior Droid
    Ojelola's Avatar
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    #2
    Does this work properly on the Droid 2 Global (A956) with System Version 4.5.629 ?
    Has anybody tried this? If so, were there any difficulties encountered?



    Quote Originally Posted by themib View Post
  3. Junior Droid
    jwagman1's Avatar
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    #3
    RSD gives this error

    Failed flashing process. Interface BP: Checksum error in the RAM Downloader for Flash Bootloader. File: 0x13AD (0x702C)

    any ideas?????
  4. Droid
    Scubamike's Avatar
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    #4
    Quote Originally Posted by jwagman1 View Post
    RSD gives this error

    Failed flashing process. Interface BP: Checksum error in the RAM Downloader for Flash Bootloader. File: 0x13AD (0x702C)

    any ideas?????
    I'm dealing with this error too. I'll post if I find a solution.
  5. Droid
    Scubamike's Avatar
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    #5

    Ok, Checksum error yada yada yada is ignorable...

    Ok. I'm rooted. Error and all. From what I've read, because this is a modified .sbf the checksums fail. Forget about it and "run what you brung!" When it fails, wait for the phone to reboot from RSD. If it doesn't, hit "Show Device". Eventually, it will either say on the phone "Update Complete" or be at the bootloader screen. If it ends up at the boot loader screen, hit the power button to shut it off and turn it back on again. If it is still in the boot loader mode, shut it off with the power button, unplug the USB cable until you see the normal boot up "M". Then plug it back in and let the root process complete. Golden. If you do a batt pull while it is says "Updating SW" it will brick and say "Corrupted Code". Who cares!?! Just SBF, and you're still golden.





  6. Junior Droid
    Ojelola's Avatar
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    #6

    System Version 4.5.629 ?

    Okay, that's all good. My question still remains:

    Does this stuff work properly on the Droid 2 Global (A956) with System Version 4.5.629 ?


    Quote Originally Posted by Scubamike View Post
    Ok. I'm rooted. Error and all. From what I've read, because this is a modified .sbf the checksums fail. Forget about it and "run what you brung!" When it fails, wait for the phone to reboot from RSD. If it doesn't, hit "Show Device". Eventually, it will either say on the phone "Update Complete" or be at the bootloader screen. If it ends up at the boot loader screen, hit the power button to shut it off and turn it back on again. If it is still in the boot loader mode, shut it off with the power button, unplug the USB cable until you see the normal boot up "M". Then plug it back in and let the root process complete. Golden. If you do a batt pull while it is says "Updating SW" it will brick and say "Corrupted Code". Who cares!?! Just SBF, and you're still golden.




  7. Droid Ninja
    themib's Avatar
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    #7
    why don't try and let us know
    [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. Droid
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    #8
    Quote Originally Posted by Ojelola View Post
    Okay, that's all good. My question still remains:

    Does this stuff work properly on the Droid 2 Global (A956) with System Version 4.5.629 ?
    Emphatically "no"! As the thread says, this is for the A955/A957. The A956 has a significantly different firmware. Your root method for 4.5.629 can be found here:

    [How-to] [SBF] unbricking &#38; root D2g 629 - Droid 2 / R2D2 / Milestone 2 / Droid 2 Global - RootzWiki
  9. Droid Ninja
    themib's Avatar
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    #9
    [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
  10. Droid Ninja
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    #10
    Yeah, I do believe in the Rootz thread one member used this on the Global, the bat file along with the Global SBF, and was successful.
    What is best in life? "To crush your enemies, to see them driven before you, and to hear the lamentations of their women."
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