Wolf's ultimate flash and downgrade guide (NO ROOT NEEDED) (root opportunity for .21)

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svladimir

Senior Member
Oct 22, 2010
132
9
Brisbane
bpear96 said:
I did step 5 after my prime fully loaded and it took like 5 minutes and i rebooted into .15 fine, are you sure your using a .15 blob?
Click to expand...
Click to collapse

Damn, my bad :)
I first just copied the firmware file to the root of my memory - nothing. I then renamed it to blob - nothing. Then finally I looked inside and use the blob from the - this time worked.

Phew !
 
D

DaddelWolf

New member
Apr 27, 2011
3
0
any mirrors for ASUS Firmware 9.4.2.15 DE_epaduser9_4_2_15UpdateLauncher.zip (German) ? i search at 4 forums and google at :( ale sites are offline or linked to asus ftp :((((
 
N

null.div.zero

Member
Jan 29, 2012
7
0
Excellent :D . I just downgraded from .21 and rooted. using method 2. Is there any chance of a method 3 for TF201s ? Mine is a tablet where the asus tool doesn't work and asus wont help:mad:
 
P

prog19

Senior Member
Apr 29, 2012
573
186
Can I install a CWM Rom like Prime using Method 1 ?

I'm rooted, but i don't have CWM installed because of the OTA updates.

In any case, if i can't, and install CWM to install Prime, i will be able to install future updates by asus if anyone post the blob files, or as soon as it pops up in the asus site, right?
 
K

kgb-agent

Member
Jul 26, 2008
31
4
roygaard said:
Yes, as soon as you've unlocked your device you don't need this method anymore. You can use any other pre-rooted firmware ...

Regards,
Roy
Click to expand...
Click to collapse


Thanks Roy ..... I found this out but tried the method here after I did the Viper routine. Sadly too late I discovered Viper would not work on the latest ASUS update and tried the unlock option in Viper. Then I saw this thread and missed the bit about it not working on an unlocked Prime :eek:

So I am stuck because altho feasibly I can install any rom I cant because I cant install recovery from all the methods I have tried so far :(

Does this mean I am stuck till Asus release the NVflash ?

Alternately .... what happens if I do a factory reset? Will it take me back to a older version of the stock ROM ?

Cheers
 
B

bimbobo

Senior Member
Jan 15, 2012
535
55
This new tool does not work for me. (The one using modded vipermod)
It reboots after choosing option 1, but after the process is done and another reboot occurs, I am still on WW 21 not rooted. and not downgraded.
 
Last edited:
B

bimbobo

Senior Member
Jan 15, 2012
535
55
Why isn't it working for me?

Put a WW15 blob on the sdcard

1) I start the tool
2) I choose option 1
3) all seems well, see screenshot
4) After 2 reboots it's still on WW21

It does not take 3-10 minutes as the screen says. It's like it does not catch the ww 15 on the sdcard :-(
 

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1-2-Hak

Senior Member
Feb 1, 2005
296
60
All I can say is Legend.... wait for it ...dary

Went from .21 to .15 rooted OTA rootkeeper and back to .21 without loosing anything.

ALL DATA INTACT. no user reloads

Thanks soo much.
 
A

AlexWolf_XDA

Member
Feb 14, 2012
8
2
I collect all former prime's firmwares at asustablets.alexwolf.ru/files.html This site is mostly in russian but download area is selfexplained.
And i have a question: can we just create symlink to required system folder and gain root access via known methods without downgrading and other bother steps?
Something like:
Ln -s /system/xbin /data/local/tmp
 
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W

wolf849

Senior Member
Mar 19, 2009
68
221
AlexWolf_XDA said:
I collect all former prime's firmwares at asustablets.alexwolf.ru/files.html This site is mostly in russian but download area is selfexplained.
And i have a question: can we just create symlink to required system folder and gain root access via known methods without downgrading and other bother steps?
Something like:
Ln -s /system/xbin /data/local/tmp
Click to expand...
Click to collapse

Nope because it is secured by kernel.
 
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sbiriguda

sbiriguda

Senior Member
Feb 3, 2011
307
155
L'Aquila
AlexWolf_XDA said:
And i have a question: can we just create symlink to required system folder and gain root access via known methods without downgrading and other bother steps?
Something like:
Ln -s /system/xbin /data/local/tmp
Click to expand...
Click to collapse
/system is mounted read-only, so you can't alter anything on it.

Moreover, adb shell is still running as a (mostly) unprivileged user, so you won't be able to change su's ownership to root:root and its modes to 06755.
 
bpear96

bpear96

Senior Member
Sep 30, 2010
1,879
3,583
bimbobo said:
Why isn't it working for me?

Put a WW15 blob on the sdcard

1) I start the tool
2) I choose option 1
3) all seems well, see screenshot
4) After 2 reboots it's still on WW21

It does not take 3-10 minutes as the screen says. It's like it does not catch the ww 15 on the sdcard :-(
Click to expand...
Click to collapse

You put the blob on internal memory of prime right? Not a actual memory card in prime. Internal memory is mounted as /sdcard on prime, also you extracted the fw you downloaded and find the blob file didnt just rename the .zip to bob?

---------- Post added at 01:21 PM ---------- Previous post was at 01:20 PM ----------
mr_cat said:
all i can say is legend.... Wait for it ...dary

went from .21 to .15 rooted ota rootkeeper and back to .21 without loosing anything.

All data intact. No user reloads

thanks soo much.
Click to expand...
Click to collapse

how i met your mother :d!
 
ilgigios

ilgigios

Member
Nov 6, 2011
7
1
Padova
help me please

hello guys
I followed the guide from Method 3 - UnRooted
In step 3 when I insert this string

dd if = / sdcard / recoveryblob of = / dev/block/mmcblk0p4

The terminal answer me this error

"dd" command nin is recognized as an internal or external command, operable program or batch file.

how to solve this problem thanks

My device is

Android 4.0.3
74k.us_epad build-9.2.1.21-20120413
sn: b80kas

thanks
 
W

wolf849

Senior Member
Mar 19, 2009
68
221
ilgigios said:
hello guys
I followed the guide from Method 3 - UnRooted
In step 3 when I insert this string

dd if = / sdcard / recoveryblob of = / dev/block/mmcblk0p4

The terminal answer me this error

"dd" command nin is recognized as an internal or external command, operable program or batch file.

how to solve this problem thanks

My device is

Android 4.0.3
74k.us_epad build-9.2.1.21-20120413
sn: b80kas

thanks
Click to expand...
Click to collapse
are you executing this command in shell? Becouse it seems that you have not entered adb shell
 
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    W
    wolf849
    WARNING

    This method will not work on any JB rom available, apparently google has patched the exploit.​

    Note that downgrading method for unrooted devices is highly experimental and may turn your device into worthless brick. Read this WHOLE thread carefully before you start doing anything with your Transformer.

    MOD EDIT: It is reported that this method doesn't work with the new Jelly Bean firmwares on the TF201 and the TF300T,

    Sorry, but I will not be able to support you between 3rd and 15th of May because I have to pass my final exams.
    However feel free to post your questions in this topic I am sure that somebody will be able to help you.    ​
    Click to expand...
    Click to collapse
    Description​
    Method 1 - Rooted Devices
    This method allows you to flash any update released by ASUS without need for custom recovery.
    ROOT is required to unlock mmcblk0p4 write access for dd.

    Method 2 - UnRooted Devices
    This method allows you to flash any update released by ASUS, no mater for SKU etc.
    It uses file linking trick to unlock mmcblk0p4 write access even when su is not present.

    Method 3 - UnRooted Devices - Recommended
    This method allows you to directly flash the recovery even on unrooted device. This may be used next to root your TF by prepared su package.
    It uses file linking trick to unlock mmcblk0p4 write access.
    Click to expand...
    Click to collapse
    Disclaimer​

    Despite both methods have been confirmed (by myself) to work, the whole process of flashing mmcblk0p4 with dd brings high risk of bricking device by for example file system corruption.

    I do not take any responsibility for damaged or bricked devices. Before flashing you have to assume the risk and chances of geting bricked.

    Under no circumstances should you brake cmd during blob file is flashed by dd. If that happens do not reboot. PM me and go on IRC
    Click to expand...
    Click to collapse
    Requirements​


    • BLOB file (look at links box at the bottom for few)
    • ADB enabled
    • Root acces (only method 1)
    Click to expand...
    Click to collapse

    Notes​
    Sorry for the mistakes, but English is not my native language PM me if you find any so I will be able to correct them.

    Before posting a question look into FAQ maybe it have been already answered.

    Guide is inspired by Turge who wrote similar article for TFP (link here). However whole 2nd method was invented and described by me.

    Thanks go to:
    Code: 
    [CENTER]
AndroidRoot.mobi - for RazorClaw
ViperBoy - for viperMOD rooting tool
jcase - for NachoRoot
sparkym3 - for his ICS rooting methods
Roach2010 - for all his work
sbiriguda - who inspired me to dig around symlinking
[/CENTER]
    Click to expand...
    Click to collapse

    Instructions - Method 1 - Rooted​
    1. Upload the BLOB file to internal storage of your tab. (mounted as /sdcard)
    2. Connect tablet to the computer and start ADB session.
    3. When you will be in adb shell execute following comands:
    Code: 
    su
dd if=/sdcard/blob of=/dev/block/mmcblk0p4
    4. The command prompt will be empty as wnen nothing happen, do not panic wait until the end of the process. DO NOT INTERRUPT (it will take apx.3-10 min)
    5. When you see the following message:
    Code: 
    1066806+1 records in
1066806+1 records out
546204969 bytes transferred in 250.309 secs (2182122 bytes/sec)
    (the numbers in resulted message may be diffrent but it has to have the same structure)
    You can safety reboot the device by exiting shell and executing :
    Code: 
    adb reboot
    6. Once rebooted you will see ASUS EeePAD flashing progress bar. Be patient and wait till the end.
    7. Tablet will reboot itself and start loading new system. (as it is first boot it may take few minutes)
    8. Be happy from your new firmware.

    ADDITIONAL OPTIONAL STEP

    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.
    Click to expand...
    Click to collapse

    Instructions - Method 2 - UnRooted​
    1. Upload the BLOB file to internal storage of your tab. (mounted as /sdcard)
    2. Connect tablet to the computer and start ADB shell session.
    3. When you will be in adb shell execute following commands:
    Code: 
    mv /data/local/tmp /data/local/tmp.bak
ln -s /dev/block/mmcblk0p4 /data/local/tmp
exit
    4. Now reboot your tab through:
    Code: 
    adb reboot
    5. Once you see ASUS loading screen you should be able to start ADB shell session again (if not just wait), than (in shell) execute:
    Code: 
    dd if=/sdcard/blob of=/dev/block/mmcblk0p4
    6. The command prompt will be empty as wnen nothing happen, do not panic wait until the end of the process. DO NOT INTERRUPT (it will take apx.3-10 min)
    7. When you see the following message:
    Code: 
    1066806+1 records in
1066806+1 records out
546204969 bytes transferred in 250.309 secs (2182122 bytes/sec)
    (the numbers in resulted message may be diffrent but it has to have the same structure)
    You can safety reboot the device by exiting shell and executing :
    Code: 
    adb reboot
    8. Once rebooted you will see ASUS EeePAD flashing progress bar. Be patient and wait till the end.
    9. Tablet will reboot itself and start loading new system. (as it is first boot it may take few minutes)
    10. Be happy from your new firmware.

    ADDITIONAL OPTIONAL STEP

    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.
    Click to expand...
    Click to collapse

    Instructions - Method 3 - UnRooted

    This will definitely not work with Transformer Prime continue only if you are owner of TF101 of TF101G​

    1. Upload the RECOVERYBLOB file to internal storage of your tab. (mounted as /sdcard)
    2. Connect tablet to the computer and start ADB shell session.
    3. When you will be in adb shell execute following commands:
    Code: 
    mv /data/local/tmp /data/local/tmp.bak
ln -s /dev/block/mmcblk0p4 /data/local/tmp
exit
    4. Now reboot your tab through:
    Code: 
    adb reboot
    5. Once you see ASUS loading screen you should be able to start ADB shell session again (if not just wait), than (in shell) execute (some times it gets longer, but do not panic it is normal):
    Code: 
    dd if=/sdcard/recoveryblob of=/dev/block/mmcblk0p4
    6. The command prompt will be empty as when nothing happen, do not panic wait until the end of the process. DO NOT INTERRUPT (it will take apx.3-10 min)
    7. When you see the following message:
    Code: 
    8860+1 records in
8860+1 records out
4536396 bytes transferred in 1.718 secs (2640509 bytes/sec)
    (the numbers in resulted message may be different but it has to have the same structure)
    You can safety reboot the device by exiting shell and executing :
    Code: 
    adb reboot
    8. Once rebooted you will see ASUS EeePAD flashing progress bar. Be patient and wait till the end.
    9. Tablet will reboot itself and start loading new system. (as it is first boot it may take few minutes)
    10. Be happy from your new recovery.

    ADDITIONAL - ROOTING

    11. Download this SU + Superuser.apk package and place it on internal memory or microsd
    12. Boot to recovery. (turn off your TF and than boot with [vol down]+[power] pressed, once you see the letters identifying the system press [vol up]
    13. Now you should be in custom recovery. Select 'Install from zip file' and then select the file on desired location internal or external.
    14. Once flashing is done go back and select 'Reboot system'
    15. Now you got freshly rooted Transformer. ENJOY
    Click to expand...
    Click to collapse

    BLOBs​

    BLOB file can be extracted from any update file. It is contained inside XX_epad-user-x.x.x.x.zip achive. Where XX (e.g WW or TW) refers to SKU of firmware and x.x.x.x to its version (e.g 9.2.2.3)

    Or you can pick up a few here ;)

    Now they are ziped to reduce the sizes (MD5 value shows the control sum of each blob not zip) (sorry for hostings but I don't have space on dropbox any more, you may register to increase) (if you know faster mirror PM me)

    NEW MIRROR SITE WITH ALMOST ALL FIRMWARES HERE

    TF101/G BLOBs (Transformer)

    Honeycomb

    WW 8.6.6.19 - MD5: D63D60F6C71F5B614B338244D3788735 - or mirrors (1 2)

    WW 8.6.6.23 - MD5: 1227F19BC4415661CACB05A483504953 - or mirrors (1 2)

    Ice Cream Sandwich

    US 9.2.1.11 - MD5: 4F6069430B20C35C8833F50DFA0FE0FD - or mirrors (1 2)

    WW 9.2.1.17 - MD5: 5C78C28C31888943AB67CCE4B4448319

    US 9.2.1.17 - MD5: 380CA6399374FF5F84154509365A83F7 - or mirrors (1 2)

    TW 9.2.1.17 - MD5: CA52E4AD670DFFA29DC1CBA04A0A4164 - or mirrors (1 2)

    WW 9.2.2.3 - MD5: 5D5A44069346C4D7D2740E4100520692 - or mirrors (1 2)

    TW 9.2.2.3 - MD5: pending


    TF201 BLOBs (Transformer Prime)

    Honeycomb

    WW 8.8.3.33 - MD5: 5136E579FAEDDFE15F6AAE623B6CB67D - (or mirrors 1 2)

    Ice Cream Sandwich

    WW 9.4.2.11 - MD5: B2668A3387924B19A91F74ABF5DBE4E8 - (mirror)

    US 9.4.2.14 - MD5: EF2E635BD6921BFA9D01FC0E4DD0644B - (mirror)

    WW 9.4.2.15 - MD5: 55122257B30E9376DF463F3C1A8BA702 - (or mirror 1 )

    WW 9.4.2.21 - MD5: 1129DC2643BD0F5DC6C07B9A1B619548 - (or mirror 1 )

    RECOVERYBLOBs (only for TF101)

    Rburrow's Rogue XM Recovery (mirror) - MD5: 6EE759A84ED02F0D95A029EC245CFDC5 - thread
    ​
    Click to expand...
    Click to collapse

    Hope it will help
    Results​
    Confirmed to work on both TF101/G (ASUS Transformer) and TF201 (ASUS Transformer Prime)

    However keep in mind that TFP have to be locked in order to use second method otherwise you may brick your device.


    It probably can be used with slider as well :)

    I also confirmed that it is possible to root any official OTA (on TF101/G) by flashing recoveryblob containing custom recovery and than update.zip with su and superuser app.

    Proven that Method 2 also work with 9.2.1.21 update to downgrade the software and reroot device. - thanks alvin612.

    Method 2 may also work on locked Transformer Prime however be careful and read warning and disclaimer in this thread.
    Click to expand...
    Click to collapse

    Click 'Thanks' if I helped you ;)
    View
    14
    bpear96
    bpear96
    *THIS TOOL IS USING WOLF'S 2nd method of downgrading, this is Viperboys one click tool, I modded to add Wolf's downgrade*

    ONE CLICK Downgrade, using Wolf's method and root tool (thanks to viperboy)
    ​
    I modded ViperMods awesome prime tool, to add an option to one click downgrade, using wolf's no root method :D. Just put the blob of FW you want to go to on the root of your primes internal memory, then run option 1 on my modded vipermods tool :D

    99.9% credit go to -Viperboy- and Wolf849 :D i just added option in viperMOD's tool

    EDIT: Fixed error in script

    Download:
    https://docs.google.com/uc?id=0B8gHyfs-S25Lal9KOWFQbWtzalE&export=download

    http://205.196.122.126/9jvynozv3cpg...MOD+Primer+Tool+v4.5+-+Modded+by+bpear_v3.zip (mediafire direct link)

    http://d-h.st/KrP

    *NOTE* this is using Wolf's method 2 which is confirmed to work on prime, im not sure about tf101 etc. from here http://xdaforums.com/showthread.php?t=1622628

    Mirrors of WW and US .15 blob (TRANSFORMER PRIME): you have to extract the .zip, possibly twice, then there will be a blob file, put that on /sdcard
    http://xdaforums.com/showpost.php?p=25503960&postcount=47
    View
    3
    sbiriguda
    sbiriguda
    Let me just say this: you are a freaking genius. I didn't even think of symlinking /dev/block/mmcblk0p4 to /data/local/tmp so it would change ownership and permissions on reboot. This is f*ing brilliant!

    Moreover, if you have a blob for CWM you can also use the second method to install it on an unrooted device and then root it using the customary update.zip with su and superuser.apk (yes, even on 9.2.2.3 TF101Gs).

    Again, great job! ;)
    View
    3
    W
    wolf849
    FAQ

    I'm confused, which BLOB file should I choose?

    You have to choose BLOB with the firmware you want to install e.g. if you are on 9.2.2.3 and want to downgrade to Honeycomb just choose BLOB file from 8.6.6.19 or 8.6.6.23


    Wolf help something happened to my tab, it wont boot up.

    If you let dd to finish all its job and after reboot you saw the flashing bar, but your ROM still don't want to boot up you have probably downgraded from ICS to HC. Just do the wipe 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. Than everything should be fine.


    I'm stuck on step 3 all the time I have message like -> failed on '/data/local/tmp' - Not a directory <- What should I do?

    It means that you have already symlinked something to /data/local/tmp and moved your previous tmp to tmp.bak. To fix that you can either execute:
    Code: 
    rm /data/local/tmp.bak
    or:
    Code: 
    mv /data/local/tmp /data/local/tmp.mad
    and repeat procedure.


    Can I root the latest firmware and keep my data untouched?

    Yes, on both TF and TFP. For TF101 use method 3.
    For TF201 backup your data with ASUS Backup utility, than do a downgrade, root and install OTA ROOT Keeper from Voodoo. After that update OTA and recover your root and data.


    Can this method be used to root TF301? (aka EeePAD Infinity)

    Unfortunately no, it only allows us to do a step back without root permissions and than apply a root. However I'm still working around ASUS Backup App as I have an idea of exploit (but not enough time to study apk more). If you are interested in this consider donation as I don't have access to any TF301 and that would speed up the researches.
    View
    3
    bpear96
    bpear96
    Mirrors of US .15 blob

    Here are some mirrors i made of WW and US .15 blob

    Mirrors of US .15:
    http://drivers.softpedia.com/get/JO...ansformer-Prime-TF201-Firmware-94215-US.shtml ( not mine obviously :D)
    http://d-h.st/hGK
    https://docs.google.com/open?id=0B8gHyfs-S25LQm9ITDN1QTZERm8
    http://bitshare.com/files/3gv5mo0z/US_epad-user-9.4.2.15.7z.html
    https://www.rapidshare.com/files/3563516501/US_epad-user-9.4.2.15.7z
    http://d01.megashares.com/dl/qsnrY5y/US_epad-user-9.4.2.15.7z
    http://bayfiles.com/file/8ObB/0E973F/US_epad-user-9.4.2.15.7z
    http://www.gamefront.com/files/21633428/US_epad-user-9.4.2.15.7z
    http://uptobox.com/yhpuee11yyav/US_epad-user-9.4.2.15.7z.html
    http://fileflyer.com/view/aa62cBW

    Mirrors of WW .15:
    http://drivers.softpedia.com/get/JO...ansformer-Prime-TF201-Firmware-94215-WW.shtml (this is not mine again)
    http://d-h.st/Lcw
    https://docs.google.com/open?id=0B8gHyfs-S25LQklqeVUzV2VJT0k
    View

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