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Thread: .21 Root method for locked devices now possible

  1. #1
    Ratchet
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    .21 Root method for locked devices now possible

    android heros (Wolf849 at XDA) have come up with a rooting method for .21. To be precise its a way to downgrade, get root, and use rootkeeper to upgrade back to .21.

    Source Links
    1) http://forum.xda-developers.com/show....php?t=1622628

    Since the instructions are perhaps sparse for those fairly new to Rooting and ADB I've put together a write up in laymens terms:

    Also please note no one takes any responsibility here if you choose to undertake something with your device but yourself. Before we begin let me say that devs' work like this is the best thing about Android and I would strongly suggest donating some money to Wolf if you're so inclined. Personally, Thanks Wolf!

    I just rooted my TF201 this morning it took about 90 minutes but I think you could execute this in about 30 minutes if you were good.


    Original Source References
    •Wolf's tools http://forum.xda-developers.com/show....php?t=1622628
    •Root Specific TF201 Discussion http://forum.xda-developers.com/show....php?t=1626190
    •ViperTools http://forum.xda-developers.com/show....php?t=1427125


    Steps:
    •Go to ASUS.com support site and download your localities firmware.
    ◦If you like honeycomb or any specific build download it
    ◦If you are trying to root pick an ICS based firmware of .15 or .17
    •Extract the file TWICE to the root of your internal memory (mnt /sdcard not external SD Card) on the TF201
    ◦If done properly there will be a "blob" file of about 500MB
    •Download ViperMod Tools here http://forum.xda-developers.com/show....php?t=1427125
    ◦extract to a convient location as we will use this for ADB Access
    •Put your Transformer Prime into "USB Debugging" under settings-> dev options
    •Connect your Transformer Prime into your computer and open up "Device Manager"
    •Click on ADB Android Device with red exclaimation mark,
    ◦update driver,
    ■point to the folder "Something Drivers"
    ■within ViperMod Download
    •Also update the other "Transformer Prime" Device drivers in the same manner
    •Start an administrator command prompt
    ◦type cmd in the windows search if you're not familiar and right click
    •navigate with cd.. and cd to the directory of ViperMod Tools Download or whatever its called
    •See if you can start to work by typing "ADB DEVICES"
    ◦If you can't its likely a driver issue, please google ADB help
    •Enter ADB Shell, by typing "ADB SHELL"
    •Enter following commands with return after each line
    •mv /data/local/tmp /data/local/tmp.bak
    ln -s /dev/block/mmcblk0p4 /data/local/tmp
    exit
    •adb restart
    •As device restarts when on the second ASUS Pursuing Persistent Illeteration splash screen when the backlight dims you should be able to enter ADB with the device again
    •check by typing "ADB SHELL" until it enters
    •Type this command
    •dd if=/sdcard/blob of=/dev/block/mmcblk0p4
    •IF IT DOES NOTHING YOU ARE WINNING and DO NOT EVEN THINK ABOUT DOING ANYTHING wait for a few minutes to prompt you with this:
    ◦1066806+1 records in
    ◦1066806+1 records out


    546204969 bytes transferred in 250.309 secs (2182122 bytes/sec)

    ■or something in that form
    •then type "exit"
    •and "ADB RESTART"
    •you may get stuck in a bootloop if you downgrade too far (ICS to HC), if this happens WOLF reccomends:
    ◦In some cases flashing previous firmware leaves data partition intact.
    ■I suggest to clean it by booting with [vol down] and [power] pressed (you will see the info about the rom). Than wait until the screen with android and wipe data appear. Select wipe by switching with [vol down] and accepting with [vol up] pressed two times. It mostly happen when downgrading to HC from ICS.


    If you are trying to root .21 follow the following steps in addition to those above:


    •Enter ViperMOD tools by clicking the appropriate .exe file within ViperMod Download
    ◦and follow prompts to root or utilize SPARKYS APK if that doesn't work to get super user
    ◦check this out if you want more documentation: http://forum.xda-developers.com/show....php?t=1427125
    •Once you get Super User download VOODOO OTA ROOTKEEPER (sorry its only a google play link-- dislike) it will tell you if Super User has been properly granted permissions with a check mark and a button that says "Backup Super User" or something
    •Do that
    ◦exit the re-enter to ensure that SU has been properly backedup
    •Go to settings->about tablet-> software update and update when it prompts you
    •Click on OTA Rootkeeper on the newly updated Pad
    ◦Click "Restore Root"
    •Do a hard reset- hold power button and volume down until the device turns off then begins to boot
    •Try to wipe cache settings if you can with Rom Toolbox or similar

    This is posted with (unintentionally) better formatting on my blog: http://mark-tech.blogspot.com/2012/0...ime-tf201.html
    Last edited by tf201; 04-30-2012 at 05:42 PM.
    Frederuco likes this.

  2. #2
    Ratchet
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    Also you can downgrade or install any Asus firmware without unlocking

    Sent from my Transformer Prime TF201 using Tapatalk

  3. #3
    Soundwave
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    Does this still work as of 5/03/12? Would LOVE to root, but don't wanna unlock.

  4. #4
    Soundwave
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    CRAP! Just noticed I've been upgrade to .3
    Will this still work?

  5. #5
    Soundwave
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    It worked for me. I couldn't find the US .17 firmware on the Asus site but I was able to find it through Google.
    Basically I downgraded to the older firmware, used viperMOD and rootkeeper. After I did the OTA upgrade to .21, I used rootkeeper to restore root.


    Sent from my Transformer Prime TF201 using Tapatalk 2

  6. #6
    Soundwave
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    i fought with that method for 6 hours last night. BUT, there is a thread attached to one of those that someone modified the viper tools. it's pretty much a 1 click method now. did mine in 20 minutes. and that was just sitting back and letting it run.
    here it is
    Finally!!! A method to regain root access for .21 WITHOUT Unlocking - Page 6 - xda-developers

  7. #7
    Soundwave
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    I wrote a tutorial on how to do get root on .21. It involves downgrading to an older version, get root access, protect root with OTA RootKeeper and then upgrade back to the latest firmware version. Check it it out here:
    HowTo: Root you Asus Transformer TF101 running ICS 9.2.1.21 or Transformer Prime TF201 running ICS 9.4.2.21, WITHOUT unlocking your bootloader! - Freek.ws

  8. #8
    Jazz
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    wah.. it's kinda hard for me... huhuhu

  9. #9
    Ratchet
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    Definitely not the easiest root method. It does work though, I'll see if there's a one touch method. Viper tools would be the only one if there was one.

    Sent from my Transformer Prime TF201 using Tapatalk 2

  10. #10
    Ratchet
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    There isn't a one click root or automatic root. Checked on 5/21

    Sent from my Transformer Prime TF201 using Tapatalk 2

 

 

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