[TF300TG][Guide] Flashing back the original stock ROM

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A

Auliyaa

Member
May 18, 2012
7
37
Hi everyone,

I'm owning A TF300TG model and I recently tried to flash one of the ROMS referrenced on those forums and by doing so I found out that my tablet had lost the 3G features so I had to flash back the Asus stock ROM to get it back.

Since I saw many of you got trouble reinstalling the stock ROM, I decided to write a quick guide on how to do it so everyone could get their tablet fully working again :)

Note: For the record, when I did the following operations, I already had unlocked the bootloader and installed the CWM recovery.

Disclaimer:
By following this guide, you will have to issue commands that risk to damage (aka. brick) your tablet or at least void your warranty. I won't be responsible for any damage made to your device. You've been warned.
Click to expand...
Click to collapse

  1. Download the stock ROM zip file on Asus website (current version is [WW | TW]_epaduser9_4_4_28_1UpdateLauncher.zip) for the TF300TG tablet. Be sure to download the firmware matching your SKU.
  2. Unzip the downloaded file, you will get another archive called , unzip this one too
  3. You should end up with several file, with one of them called blob
  4. For the next step, you will need to install the Android SDK to get the fastboot utility. If you do not know how to use fastboot, you should take a look at this guide.
  5. Once you have installed fastboot, boot your tablet into fastboot mode (Plugin your tablet on your computer's USB, Hold down Power+VolDown, dont press VolUp when prompted, select the USB icon and press VolUp)
  6. Open a command line terminal and navigate to the folder containing the blob file.
  7. Then type the following command:
    fastboot -i 0x0B05 flash system blob
    Click to expand...
    Click to collapse
  8. For some reason, the transfer seems to fail from time to time, if so, just try again by going back to previous step.
  9. Once the transfer is done and you get that sweet "SUCCESS" printed on your screen, just type the following command to reboot your tablet:
    fastboot -i 0x0B05 reboot
    Click to expand...
    Click to collapse

And there you have ! You are now back to stock ROM with fully working 3G :)
 
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ZaJules

ZaJules

Senior Member
Sep 13, 2005
341
61
51
Port Elizabeth
Thanks a lot for this, I found these instructions on Wolf's thread but wasnt sure it would work with our devices, Thanks for taking the first big step.

Questions.
1. Does this wipe your data?
2. Does CWM still work after?
 
ZaJules

ZaJules

Senior Member
Sep 13, 2005
341
61
51
Port Elizabeth
Hi, followed the steps but it didnt work for me


Fastboot copies the file but after when it tries to flash it gives an error

sending 'system' (796653 KB)...
OKAY [137.443s]
writing 'system'...
FAILED (remote: ()
finished. total time: 138.477s


The Tab shows
Failed to process command flash:system error(0x170003)

The progress bar is showing under the USB logo with 1% blue, after hold power down I'm back into Onyx Rom

Any Thoughts?
 
A

Auliyaa

Member
May 18, 2012
7
37
I had the same problem and I just issued the same command a second time and it worked just fine :)

Try to format your /system (under the mounts and storage option) from CWM and wipe data and cache.
 
  • Like
Reactions: ZaJules
ZaJules

ZaJules

Senior Member
Sep 13, 2005
341
61
51
Port Elizabeth
2nd time a charm!

Worked fine the second time i ran the command,
Im back to stock again :good:

I will wait for a 3G friendly Rom before flashing again

Thanks for your help

---------- Post added at 05:59 PM ---------- Previous post was at 05:42 PM ----------
Auliyaa said:
AFAIK, this will wipe your data, remove CWM and uninstall root. Your device's bootloader will still stay unlocked though.

You will have to flash CWM back using this guide: http://xdaforums.com/showthread.php?t=1668173
Click to expand...
Click to collapse


Yip Sends you back to total stock
Stock Recovery
Stock Rom
only thing that sticks is Unlocked Bootloader
 
  • Like
Reactions: Auliyaa
J

JezzAU

New member
Jul 26, 2012
3
0
Thanks heaps for this :)

I ended up in trouble when I flashed the TF300T firmware by mistake. It kept freezing and rebooting on me after that little stuff up.
Anyhow before I did that I made a backup with CWM, and after I restored it my 3G was gone but everything else worked fine.
Manual updates were failed though and they still do. At least I have my 3G back :victory:

So this method would probably work for upgrading to .40 as well, but it means a complete datawipe!
I'm sure there are many of us in the same boat now. I guess we will just have to wait and hope that some kind person makes a recovery image for the TF300TG?
 
V

VicRC

Member
Mar 7, 2012
6
0
Auliyaa said:
Hi everyone,

I'm owning A TF300TG model and I recently tried to flash one of the ROMS referrenced on those forums and by doing so I found out that my tablet had lost the 3G features so I had to flash back the Asus stock ROM to get it back.

Since I saw many of you got trouble reinstalling the stock ROM, I decided to write a quick guide on how to do it so everyone could get their tablet fully working again :)

Note: For the record, when I did the following operations, I already had unlocked the bootloader and installed the CWM recovery.



  1. Download the stock ROM zip file on Asus website (current version is [WW | TW]_epaduser9_4_4_28_1UpdateLauncher.zip) for the TF300TG tablet. Be sure to download the firmware matching your SKU.
  2. Unzip the downloaded file, you will get another archive called , unzip this one too
  3. You should end up with several file, with one of them called blob
  4. For the next step, you will need to install the Android SDK to get the fastboot utility. If you do not know how to use fastboot, you should take a look at this guide.
  5. Once you have installed fastboot, boot your tablet into fastboot mode (Plugin your tablet on your computer's USB, Hold down Power+VolDown, dont press VolUp when prompted, select the USB icon and press VolUp)
  6. Open a command line terminal and navigate to the folder containing the blob file.
  7. Then type the following command:
  8. For some reason, the transfer seems to fail from time to time, if so, just try again by going back to previous step.
  9. Once the transfer is done and you get that sweet "SUCCESS" printed on your screen, just type the following command to reboot your tablet:

And there you have ! You are now back to stock ROM with fully working 3G :)
Click to expand...
Click to collapse


I got a question, i had problems with the touch since the last update, so i want to go back to the original, so my question is to perform this do i have to have the bootloader unlocked?
 
B

benoitvdh

New member
Aug 8, 2012
1
0
Don't work for me

Auliyaa said:
Hi everyone,

I'm owning A TF300TG model and I recently tried to flash one of the ROMS referrenced on those forums and by doing so I found out that my tablet had lost the 3G features so I had to flash back the Asus stock ROM to get it back.

Since I saw many of you got trouble reinstalling the stock ROM, I decided to write a quick guide on how to do it so everyone could get their tablet fully working again :)

Note: For the record, when I did the following operations, I already had unlocked the bootloader and installed the CWM recovery.



  1. Download the stock ROM zip file on Asus website (current version is [WW | TW]_epaduser9_4_4_28_1UpdateLauncher.zip) for the TF300TG tablet. Be sure to download the firmware matching your SKU.
  2. Unzip the downloaded file, you will get another archive called , unzip this one too
  3. You should end up with several file, with one of them called blob
  4. For the next step, you will need to install the Android SDK to get the fastboot utility. If you do not know how to use fastboot, you should take a look at this guide.
  5. Once you have installed fastboot, boot your tablet into fastboot mode (Plugin your tablet on your computer's USB, Hold down Power+VolDown, dont press VolUp when prompted, select the USB icon and press VolUp)
  6. Open a command line terminal and navigate to the folder containing the blob file.
  7. Then type the following command:
  8. For some reason, the transfer seems to fail from time to time, if so, just try again by going back to previous step.
  9. Once the transfer is done and you get that sweet "SUCCESS" printed on your screen, just type the following command to reboot your tablet:

And there you have ! You are now back to stock ROM with fully working 3G :)
Click to expand...
Click to collapse


Hi, followed the steps but it didnt work for me too


Fastboot copies the file but after when it tries to flash it gives an error

sending 'system' (796581 KB)...
OKAY [129.964s]
writing 'system'...
FAILED (remote: (InvalidState))
finished. total time: 182.134s


The Tab shows
signature mismatch

Can you help me?
 
C

coreoflorin

New member
Sep 2, 2012
1
0
hy

i'm having a problem with my tf300t...when i turn it on it shows the asus logo and in the upper left it show device is unlocked...but i can't enter the menu showing rck and the other 3 icons...i really don't know what to do...
then there is another thing...tried to install driver...i get to the part where the tablet is visible, but with the vol up and reset with a pin...it then shuts down and if i try to power it up it dissapears from the device manager...also...if i don't turn it up, the driver can't be installed...i tried every method...please help...
can i retun it to the repair service this way or i will loose my waranty?
sorry if the spelling isn't correct...i don't speak english fluently
waiting a response...thanks in advance
 
R

rayman

Senior Recognized Developer
May 1, 2008
278
1,399
Auliyaa said:
Hi everyone,

I'm owning A TF300TG model and I recently tried to flash one of the ROMS referrenced on those forums and by doing so I found out that my tablet had lost the 3G features so I had to flash back the Asus stock ROM to get it back.

Since I saw many of you got trouble reinstalling the stock ROM, I decided to write a quick guide on how to do it so everyone could get their tablet fully working again :)

Note: For the record, when I did the following operations, I already had unlocked the bootloader and installed the CWM recovery.



  1. Download the stock ROM zip file on Asus website (current version is [WW | TW]_epaduser9_4_4_28_1UpdateLauncher.zip) for the TF300TG tablet. Be sure to download the firmware matching your SKU.
  2. Unzip the downloaded file, you will get another archive called , unzip this one too
  3. You should end up with several file, with one of them called blob
  4. For the next step, you will need to install the Android SDK to get the fastboot utility. If you do not know how to use fastboot, you should take a look at this guide.
  5. Once you have installed fastboot, boot your tablet into fastboot mode (Plugin your tablet on your computer's USB, Hold down Power+VolDown, dont press VolUp when prompted, select the USB icon and press VolUp)
  6. Open a command line terminal and navigate to the folder containing the blob file.
  7. Then type the following command:

    fastboot -i 0x0B05 flash system blob
  8. For some reason, the transfer seems to fail from time to time, if so, just try again by going back to previous step.
  9. Once the transfer is done and you get that sweet "SUCCESS" printed on your screen, just type the following command to reboot your tablet:

And there you have ! You are now back to stock ROM with fully working 3G :)
Click to expand...
Click to collapse


Using
fastboot -i 0x0B05 flash system blob
Click to expand...
Click to collapse
is a tad wrong. It works, but only by accident.
You should be using
fastboot -i 0x0B05 flash staging blob
Click to expand...
Click to collapse

The technical reason for why your command works, is because the nvidia bootloader writes files to the staging area before writing it to the partition you specify.
What essentially happens is:
  1. Blob is written to staging
  2. Blob is copied to system (meaning non-booting system)
  3. On reboot, blob is "extracted" from staging and properly flashed.
Step 3 is what makes it work in the end, but you are causing an extra unneeded write to the flash (step 2 is not really needed) :) (In this case it works, but it potentially increases the risk of bricking)
 
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zurny

zurny

Senior Member
May 17, 2012
277
63
benoitvdh said:
Hi, followed the steps but it didnt work for me too

Fastboot copies the file but after when it tries to flash it gives an error

sending 'system' (796581 KB)...
OKAY [129.964s]
writing 'system'...
FAILED (remote: (InvalidState))
finished. total time: 182.134s

The Tab shows
signature mismatch

Can you help me?
Click to expand...
Click to collapse

Your probably running Jellybean, if so this HOWTO does'nt work.
 
B

Blackdrag

Senior Member
May 11, 2011
119
14
Question: What exactly is supposed to happen? First I tried it and got the fail and did it a second time and it seemingly worked. In my command prompt it ended with

"writing 'system' ... OKAY"

and wasn't doing anything after that in the command prompt and on the tablet there was a full status bar so it looked like whatever it was doing it was finished? So I held the power button and I think it was a boot loop ... it just was the ASUS screen with the spinning circle. So I just did it again, failed the first time did it again and now I am where I left off. I guess I will wait a while and see if it says "SUCCESS" on my tablet? And if not I will put in the reboot command? (I probably should have tried that last time instead of holding the power button I forgot about the last couple lines of the guide :p)

EDIT: Or is it cuz I am flashing the wrong SKU? I didn't know what one my tablet is supposed to be ... its a cyanogenmod build so I don't think I cant find what the SKU is supposed to be. I went with US SKU because I live in the United States but I don't know if that's what it is :p

EDIT2: After waiting a while with no "SUCCESS" Windows said that adb.exe crashed or something. So I put in the reboot command but now it seems to be stuck on the ASUS loading screen again.
 
Last edited:
0

0nyx7

New member
Jun 25, 2012
4
2
Blackdrag said:
Question: What exactly is supposed to happen? First I tried it and got the fail and did it a second time and it seemingly worked. In my command prompt it ended with

"writing 'system' ... OKAY"

and wasn't doing anything after that in the command prompt and on the tablet there was a full status bar so it looked like whatever it was doing it was finished? So I held the power button and I think it was a boot loop ... it just was the ASUS screen with the spinning circle. So I just did it again, failed the first time did it again and now I am where I left off. I guess I will wait a while and see if it says "SUCCESS" on my tablet? And if not I will put in the reboot command? (I probably should have tried that last time instead of holding the power button I forgot about the last couple lines of the guide :p)

EDIT: Or is it cuz I am flashing the wrong SKU? I didn't know what one my tablet is supposed to be ... its a cyanogenmod build so I don't think I cant find what the SKU is supposed to be. I went with US SKU because I live in the United States but I don't know if that's what it is :p

EDIT2: After waiting a while with no "SUCCESS" Windows said that adb.exe crashed or something. So I put in the reboot command but now it seems to be stuck on the ASUS loading screen again.
Click to expand...
Click to collapse

I have a WW TF300T and had no problem flashing a US version.. so its no SKU problem :) how long did you wait on the ASUS screen with the spinning circle? It took up to 5 mins for me! just wait a lil bit longer next time.. And there comes no "SUCCESS" on the tablet! only a blue bar that should be full after SUCCESS comes up in your Fastboot-COMMANDLINE.. the reboot with the fastboot reboot command from the first page..just give your tab a bit more time.. its like a babe. handle it with care :silly:
 
Last edited:
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Reactions: Mcdan333
N

nikwid

Member
Mar 18, 2010
7
1
Success!

Hazaa! I can confirm that I managed to flash back to stock by flashing the blob to the staging partition. Like so many other, the first flash failed but the second time worked. I now have working 3G again! :)
 
B

Blackdrag

Senior Member
May 11, 2011
119
14
0nyx7 said:
I have a WW TF300T and had no problem flashing a US version.. so its no SKU problem :) how long did you wait on the ASUS screen with the spinning circle? It took up to 5 mins for me! just wait a lil bit longer next time.. And there comes no "SUCCESS" on the tablet! only a blue bar that should be full after SUCCESS comes up in your Fastboot-COMMANDLINE.. the reboot with the fastboot reboot command from the first page..just give your tab a bit more time.. its like a babe. handle it with care :silly:
Click to expand...
Click to collapse

Thanks for the reply 0nyx7!

I had waited a while, maybe 10-20 minutes? But I don't remember entirely. I tried flashing the stock firmware a few times but eventually I just gave up. I didn't like the possibility that my tablet was bricked so I just aborted mission and decided to go back to cm10 where it was safe. I just looked up a post on how to flash Clockworkmod Recovery with fasboot and then flashed a cm10 nightly I already had on my internal storage. So all is good... ;) Mostly.
 
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  • 35
    A
    Auliyaa
    Hi everyone,

    I'm owning A TF300TG model and I recently tried to flash one of the ROMS referrenced on those forums and by doing so I found out that my tablet had lost the 3G features so I had to flash back the Asus stock ROM to get it back.

    Since I saw many of you got trouble reinstalling the stock ROM, I decided to write a quick guide on how to do it so everyone could get their tablet fully working again :)

    Note: For the record, when I did the following operations, I already had unlocked the bootloader and installed the CWM recovery.

    Disclaimer:
    By following this guide, you will have to issue commands that risk to damage (aka. brick) your tablet or at least void your warranty. I won't be responsible for any damage made to your device. You've been warned.
    Click to expand...
    Click to collapse

    1. Download the stock ROM zip file on Asus website (current version is [WW | TW]_epaduser9_4_4_28_1UpdateLauncher.zip) for the TF300TG tablet. Be sure to download the firmware matching your SKU.
    2. Unzip the downloaded file, you will get another archive called , unzip this one too
    3. You should end up with several file, with one of them called blob
    4. For the next step, you will need to install the Android SDK to get the fastboot utility. If you do not know how to use fastboot, you should take a look at this guide.
    5. Once you have installed fastboot, boot your tablet into fastboot mode (Plugin your tablet on your computer's USB, Hold down Power+VolDown, dont press VolUp when prompted, select the USB icon and press VolUp)
    6. Open a command line terminal and navigate to the folder containing the blob file.
    7. Then type the following command:
      fastboot -i 0x0B05 flash system blob
      Click to expand...
      Click to collapse
    8. For some reason, the transfer seems to fail from time to time, if so, just try again by going back to previous step.
    9. Once the transfer is done and you get that sweet "SUCCESS" printed on your screen, just type the following command to reboot your tablet:
      fastboot -i 0x0B05 reboot
      Click to expand...
      Click to collapse

    And there you have ! You are now back to stock ROM with fully working 3G :)
    View
    5
    R
    rayman
    Auliyaa said:
    Hi everyone,

    I'm owning A TF300TG model and I recently tried to flash one of the ROMS referrenced on those forums and by doing so I found out that my tablet had lost the 3G features so I had to flash back the Asus stock ROM to get it back.

    Since I saw many of you got trouble reinstalling the stock ROM, I decided to write a quick guide on how to do it so everyone could get their tablet fully working again :)

    Note: For the record, when I did the following operations, I already had unlocked the bootloader and installed the CWM recovery.



    1. Download the stock ROM zip file on Asus website (current version is [WW | TW]_epaduser9_4_4_28_1UpdateLauncher.zip) for the TF300TG tablet. Be sure to download the firmware matching your SKU.
    2. Unzip the downloaded file, you will get another archive called , unzip this one too
    3. You should end up with several file, with one of them called blob
    4. For the next step, you will need to install the Android SDK to get the fastboot utility. If you do not know how to use fastboot, you should take a look at this guide.
    5. Once you have installed fastboot, boot your tablet into fastboot mode (Plugin your tablet on your computer's USB, Hold down Power+VolDown, dont press VolUp when prompted, select the USB icon and press VolUp)
    6. Open a command line terminal and navigate to the folder containing the blob file.
    7. Then type the following command:

      fastboot -i 0x0B05 flash system blob
    8. For some reason, the transfer seems to fail from time to time, if so, just try again by going back to previous step.
    9. Once the transfer is done and you get that sweet "SUCCESS" printed on your screen, just type the following command to reboot your tablet:

    And there you have ! You are now back to stock ROM with fully working 3G :)
    Click to expand...
    Click to collapse


    Using
    fastboot -i 0x0B05 flash system blob
    Click to expand...
    Click to collapse
    is a tad wrong. It works, but only by accident.
    You should be using
    fastboot -i 0x0B05 flash staging blob
    Click to expand...
    Click to collapse

    The technical reason for why your command works, is because the nvidia bootloader writes files to the staging area before writing it to the partition you specify.
    What essentially happens is:
    1. Blob is written to staging
    2. Blob is copied to system (meaning non-booting system)
    3. On reboot, blob is "extracted" from staging and properly flashed.
    Step 3 is what makes it work in the end, but you are causing an extra unneeded write to the flash (step 2 is not really needed) :) (In this case it works, but it potentially increases the risk of bricking)
    View
    1
    A
    Auliyaa
    AFAIK, this will wipe your data, remove CWM and uninstall root. Your device's bootloader will still stay unlocked though.

    You will have to flash CWM back using this guide: http://xdaforums.com/showthread.php?t=1668173
    View
    1
    A
    Auliyaa
    I had the same problem and I just issued the same command a second time and it worked just fine :)

    Try to format your /system (under the mounts and storage option) from CWM and wipe data and cache.
    View
    1
    ZaJules
    ZaJules
    2nd time a charm!

    Worked fine the second time i ran the command,
    Im back to stock again :good:

    I will wait for a 3G friendly Rom before flashing again

    Thanks for your help

    ---------- Post added at 05:59 PM ---------- Previous post was at 05:42 PM ----------
    Auliyaa said:
    AFAIK, this will wipe your data, remove CWM and uninstall root. Your device's bootloader will still stay unlocked though.

    You will have to flash CWM back using this guide: http://xdaforums.com/showthread.php?t=1668173
    Click to expand...
    Click to collapse


    Yip Sends you back to total stock
    Stock Recovery
    Stock Rom
    only thing that sticks is Unlocked Bootloader
    View

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