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How to dawngrade firmware?

After upgrading WW 22 to WW 26 ,I lost root and I'm unable to re install it. It seems that I have to downgrade to 22 version and re install the root, but boot with 22 version on microSD doesn't shaw notification...
Thank you by advance.

romeo06 said:
After upgrading WW 22 to WW 26 ,I lost root and I'm unable to re install it. It seems that I have to downgrade to 22 version and re install the root, but boot with 22 version on microSD doesn't shaw notification...
Thank you by advance.
Click to expand...
Click to collapse
You can't downgrade just like that,and so far the only method is this,but is not for TF700T.
Anyway make sure "Debug USB" is enabled in Settings/Developer Options and also "Unknown Sources under Settings/Security and use Debugfs for rooting.

Thank you for your response: it's not totaly secure for Infinity .. Is there a method to re install boot without downgrade?

Thank you for your response: it's not totaly secure for Infinity .. Is there a method to re install boot without downgrade? I can't with Debugfs ...

romeo06 said:
Thank you for your response: it's not totaly secure for Infinity .. Is there a method to re install boot without downgrade? I can't with Debugfs ...
Click to expand...
Click to collapse
You have to provide us more info,why Debugfs is not working?AFAIK Debugfs is the only safe rooting application for Transformer Infinity,and i used that for rooting my ww 9.4.5.26 device.
BTW instead of downgrading u could use this method to get back to a stock/clean rom:
1)Download the WW 9.4.5.26 firmware from Asus site
2)Extract the .zip file somewere on your desktop (the result will be another .zip file,use it for step 3)
3)Rename the extracted archive to "EP201_768_SDUPDATE" (without the " ") and upload it to a MicroSD card
4)Insert the MicroSD card in your tablet and use this button combination to Power ON and go to recovery --> Start the tablet by pressing Volume- and POWER togheter for 5 seconds ,a message will inform you that you have 5 seconds to enter the recovery,press Volume+ when you see that message.
At this point the device will start in recovery and should start updating your firmware

Finally, root was successfull with Debugfs after removing Asus Sync (?) and several attempts. I don't find the thread I read for...
Thank you for your help.

romeo06 said:
Finally, root was successfull with Debugfs after removing Asus Sync (?) and several attempts. I don't find the thread I read for...
Thank you for your help.
Click to expand...
Click to collapse
Does anyone know a tutorial "how to duskgrade firmware" ?

Axhole said:
Does anyone know a tutorial "how to duskgrade firmware" ?
Click to expand...
Click to collapse
No, because it is impossible, as far as I know. The only route to go is unlocking your bootloader and installing a custom ROM based on the earlier stock ROM version.

MartyHulskemper said:
No, because it is impossible, as far as I know. The only route to go is unlocking your bootloader and installing a custom ROM based on the earlier stock ROM version.
Click to expand...
Click to collapse
I think he was making a joke since the thread is asking for a "dawngrade" and since its not easy, he asked for a "duskgrade" instead. I agree with you about needing an unlocked bootloader. Maybe there's a way to use the packages from [CWM] Repackaged OTA update 9.4.5.26 US/WW versions and swap blobs? blob our way down the firmware revisions?

alienedd said:
I think he was making a joke since the thread is asking for a "dawngrade" and since its not easy, he asked for a "duskgrade" instead. I agree with you about needing an unlocked bootloader. Maybe there's a way to use the packages from [CWM] Repackaged OTA update 9.4.5.26 US/WW versions and swap blobs? blob our way down the firmware revisions?
Click to expand...
Click to collapse
I guess that could work, although I doubt anyone in his right mind would downgrade from .26 to .22.
Oh, and i noticed the spelling joke only after replying. Decided to keep my idiotic comment for all to see.

[HOW TO] Flash latest OTA update with unlocked bootloader and TWRP recovery

Hi All,
After reading many threads onto how to get the latest OTA update on my Tablet, here are my final conclusion to get latest OTA update on your Tablet if you are already rooted\unlocked\running TWRP recovery.. [i have tried almost all other methods and they did not seem to work with me]
Here is what i have before starting:
1) Rooted
2) Unlcoked bootloader
3) TWRP recovery
Before starting this process, please backup your system and recovery via TWRP recovery..
FIrst, in order to get the update you will need to revert back to stock recovery.. there is a thread already on this subject in this forum, however, i did a different approach here....
1) download the OTA update for .26 from ASUS support page
2) extract the .zip file for the build and store it in your tablet [sdcard of external card]
3) reboot the tabled into TWRP recovery...
4) select install and browse for the extract file
5) install and reboot.
[this is a very easy process that does not require any terminal commands and worked like a charm]
at this point, your tablet will have stock ROM and stock recovery installed [ you will also lose root access] all your apps before this will remain installed, so, no worries about that...
After this point, you are ready to install .30 OTA update.. here is what i did..
1) Download the OTA update for .30 from ASUS support page
2) extract the .zip file for the build and store directly into the root folder of you tablet
3) reboot the tablet and start again into Android
4) You will get a notification that an Update is detected
5) select the update and proceed with it.
6) tablet will restart and install the update...
after 10 minutes, you are now running the latest OTA update..
you will need to re-root again and install TWRP if you don't want to use stock recovery...
i hope this helps...

Great write up!
I also updated using TWRP, but I used fewer steps. I started by downloading the .30 update from the ASUS site. Then I unziped it, and placed that file on my internal storage. I booted into TWRP, and flashed the file, powered off, powered on, and it booted. I waited while the camera firmware updated. I re-installed TWRP via fastboot, booted into recovery, and flashed SuperUser.

I am not seeing the .30 firmware on the Asus page, just .26 can anyone provide a mirror?

elislurry said:
I am not seeing the .30 firmware on the Asus page, just .26 can anyone provide a mirror?
Click to expand...
Click to collapse
Found this link on another topic, it has the update:
http://support.asus.com/Download.as...&m=ASUS Transformer Pad Infinity TF700T&os=32

Updating to .30 after pbrauer's ICS Stock US 9.4.5.26 with Root
I have rooted, unlocked, TWRP installed and pbrauer's ICS Stock US 9.4.5.26 with Root.
Can I now update to .30 dlpkgfile.zip without a problem since I am on a modified ROM?

whitedragon33 said:
Found this link on another topic, it has the update:
http://support.asus.com/Download.as...&m=ASUS Transformer Pad Infinity TF700T&os=32
Click to expand...
Click to collapse
Naw thats the page it was originally on but was pulled. I was asking if anyone could upload it.

pretty sure this method has been covered in at least one of the stickied threads.

Dropbox link to Firmware
https://www.dropbox.com/s/0x0qzpisxs6d92z/US_epad_user_9_4_5_30_20120907_UpdateLauncher.zip

JaceAlvejetti said:
Dropbox link to Firmware
https://www.dropbox.com/s/0x0qzpisxs6d92z/US_epad_user_9_4_5_30_20120907_UpdateLauncher.zip
Click to expand...
Click to collapse
after i update the new firmware . and flashed the twrp... not i cant root
wtf
any help??

madsatan said:
after i update the new firmware . and flashed the twrp... not i cant root
wtf
any help??
Click to expand...
Click to collapse
Download one of the ARM versions: http://androidsu.com/superuser/ and flash in TWRP.

[Q] Rooted JB 4.1.1 stuck on .23 firmware

Hi all,
I'm rooted on JB 4.1.1 but since installing the 10.4.4.23 update OTA I'm stuck. I can't get any further updates neither OTA or by loading them on SD card and doing power+volume exercise. Any suggestion?

otas78 said:
Hi all,
I'm rooted on JB 4.1.1 but since installing the 10.4.4.23 update OTA I'm stuck. I can't get any further updates neither OTA or by loading them on SD card and doing power+volume exercise. Any suggestion?
Click to expand...
Click to collapse
What happens when you try (the "power+volume exercise" as you put it)?

HeartWare42 said:
What happens when you try (the "power+volume exercise" as you put it)?
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Click to collapse
It starts loading new firmware ok but after while it ends up with broken android picture. Then after restart it recovers to the old version.

otas78 said:
Hi all,
I'm rooted on JB 4.1.1 but since installing the 10.4.4.23 update OTA I'm stuck. I can't get any further updates neither OTA or by loading them on SD card and doing power+volume exercise. Any suggestion?
Click to expand...
Click to collapse
I am not sure if you follow the correct step to manually flash firmware on the tf700 using the stock recovery, I will reproduce the steps below just in case you miss it:
1) Download the desired Asus stock firmware (based on your SKU,eg. ww 9.4.5.26 ) *** to downgrade from Jelly Bean you need the 9.4.5.30 firmware***
2) Extract the .zip file somewere on your desktop (the result will be another .zip file,use it for step 3)
3) Rename the extracted archive to "EP201_768_SDUPDATE.ZIP" (without the " ") and upload it to a MicroSD card
4) Insert the MicroSD card in your tablet and use this button combination to Power ON and go to recovery --> Start the tablet by pressing Volume Down and POWER togheter for 5 seconds ,a message will inform you that you have 5 seconds to enter the recovery,press Volume UP before the 5 seconds expire.
At this point the device will go in recovery and should start updating your firmware .
Based on my experience, there are two important things to remember:
1. Your MicroSD card MUST BE FORMATTED AS FAT32, otherwise the stock recovery will not see the firmware file, hence the broken Android. I have tried NTFS and exFAT, both don't work. I am very sure about this.
2. You should use your computer to download the firmware and do all the preparation on your computer as well. For some unknown reason, I can never get the stock recovery to see the firmware zip file if I use my tablet to download it. I could just be imagining things, but I tend to stick to what works.

Hi,
But I don't want to downgrade. I want to keep my root and continue with the stock upgrades. As mentioned my last upgrade was the 10.4.4.23 and since that i couldn't upgrade.
Just one more info, I have cleared some of the ASUS bloatware as one of the first thing when on JB and rooted.

otas78 said:
But I don't want to downgrade. I want to keep my root and continue with the stock upgrades. As mentioned my last upgrade was the 10.4.4.23 and since that i couldn't upgrade.
Just one more info, I have cleared some of the ASUS bloatware as one of the first thing when on JB and rooted.
Click to expand...
Click to collapse
The OTA updates work only if all updated files are present and unmodified. If you deleted some files, you either need to restore them to the original version, or install a full ASUS firmware and re-root using Motochopper.

But how do I install full ASUS fw or which one? In regards of Motochopper does it root JB?

otas78 said:
But how do I install full ASUS fw or which one? In regards of Motochopper does it root JB?
Click to expand...
Click to collapse
1. See post #4 in this thread.
2. Yes.

otas78 said:
But how do I install full ASUS fw or which one? In regards of Motochopper does it root JB?
Click to expand...
Click to collapse
The instructions I gave you earlier are meant for a full reflash of any ASUS firmware, not just to downgrade. You can download any firmware and follow the steps to reflash. The reason .30 firmware was mentioned is because those instructions were written when Motochopper wasn't available, and downgrading back to ICS was the only way to root the tablet without unlocking. Luckily, with Motochopper you can now root JB without the hassle of downgrading and updating back to JB.
In brief, if you don't want ASUS Service Center's help to fix your OTA problem, just flash a full firmware as mentioned above (which will obviously remove your current root access) and then use Motochopper to obtain root again.

But that's my problem. I have tried to install the 10.4.4.25 fw and I'm getting the broken android all the time. As in previous post I have cleared some bloatware and that can be the problem. So how to reinstall stock? I understand the Motochopper now.

otas78 said:
But that's my problem. I have tried to install the 10.4.4.25 fw and I'm getting the broken android all the time. As in previous post I have cleared some bloatware and that can be the problem. So how to reinstall stock? I understand the Motochopper now.
Click to expand...
Click to collapse
I had the same issue. Here's how I successfully installed the update.
I made sure no system apps were disabled or uninstalled.
Removed my SD card.
Connected the TF700 to my PC and put the Update.zip file in the root directory.
Disconnected from the PC and rebooted.
That worked for me.
PS. I did lose root but motochopper got it back.

What version of stock fw did u put as the update.zip?

otas78 said:
What version of stock fw did u put as the update.zip?
Click to expand...
Click to collapse
The latest one available on the Asus website.

otas78 said:
Hi,
But I don't want to downgrade. I want to keep my root and continue with the stock upgrades. As mentioned my last upgrade was the 10.4.4.23 and since that i couldn't upgrade.
Just one more info, I have cleared some of the ASUS bloatware as one of the first thing when on JB and rooted.
Click to expand...
Click to collapse
That's your problem, I would guess. You removed system apps or bloatware that were part of the rom.
Hopefully you had it backed up! Restore everything you removed, then try the update again.
If you do not have a backup the stock update will fail.
Sent from my ASUS Transformer Pad TF700T using Tapatalk HD

[Q] Assistance getting from stock to kitkat

First, thanks for the assistance on this thread!
I am new to this device and have been exploring the section to help a friend. Since I want to get it right the first time, i'd like to verify the process and get advice from the pros!
It appears that the device is on the stock rom, 4.1.1.
So, from there I plan on doing the following. Please correct me if i am wrong on something!
1. Install the universal naked driver: http://forum.xda-developers.com/showthread.php?t=2386956
2. Update the device to the latest firmware and JB rom: http://forum.xda-developers.com/showthread.php?t=1697227
3. Root and unlock the device (now on 4.2): http://forum.xda-developers.com/showthread.php?t=1845377
4. Install TWRP recovery (preferred)
5. Flash new rom
Is this the correct method? Is this the best method? Is there a easier way of getting to a state where i can flash a 4.4 rom?
Thank you in advance!

For #2 I would use the built in OTA Updater to update the device in the Abbout page (because its "easier")
The rest look fine to me, I did the same procedure

nicholasb said:
First, thanks for the assistance on this thread!
I am new to this device and have been exploring the section to help a friend. Since I want to get it right the first time, i'd like to verify the process and get advice from the pros!
It appears that the device is on the stock rom, 4.1.1.
So, from there I plan on doing the following. Please correct me if i am wrong on something!
1. Install the universal naked driver: http://forum.xda-developers.com/showthread.php?t=2386956
2. Update the device to the latest firmware and JB rom: http://forum.xda-developers.com/showthread.php?t=1697227
3. Root and unlock the device (now on 4.2): http://forum.xda-developers.com/showthread.php?t=1845377
4. Install TWRP recovery (preferred)
5. Flash new rom
Is this the correct method? Is this the best method? Is there a easier way of getting to a state where i can flash a 4.4 rom?
Thank you in advance!
Click to expand...
Click to collapse
OK so for the unlocking, lots of people are having trouble unlocking on the 4.2 Stock ROM. You may want to try unlocking with v7 on the 4.1.1 ROM, then upgrading to the 10.6.1.27.1 via fastboot and then you can follow the outline here to flash a kitkat ROM: http://forum.xda-developers.com/showpost.php?p=48508679&postcount=7

cmendonc2 said:
OK so for the unlocking, lots of people are having trouble unlocking on the 4.2 Stock ROM. You may want to try unlocking with v7 on the 4.1.1 ROM, then upgrading to the 10.6.1.27.1 via fastboot and then you can follow the outline here to flash a kitkat ROM: http://forum.xda-developers.com/showpost.php?p=48508679&postcount=7
Click to expand...
Click to collapse
Ah, dang... Too late on that one. Its already been updated to 4.2 in preparation for the process, which we want to tackle tonight.
What kind of issues are we seeing?

nicholasb said:
Ah, dang... Too late on that one. Its already been updated to 4.2 in preparation for the process, which we want to tackle tonight.
What kind of issues are we seeing?
Click to expand...
Click to collapse
Well for some people the 4.2 ROM won't unlock using the tool, leaving them with a locked bootloader and inability to flash ROMs. Fingers crossed it doesn't happen to you.

Help upgrading bootloader

I have version 4.1.1.... I unlocked the bootloader without updating through the Ota. . I rooted and installed twrp.
I want to run lollipop but it says I need 4.2.1 bootloader
How do I upgrade it? Maybe without a pc?
Thank you

Cerv3r said:
I have version 4.1.1.... I unlocked the bootloader without updating through the Ota. . I rooted and installed twrp.
I want to run lollipop but it says I need 4.2.1 bootloader
How do I upgrade it? Maybe without a pc?
Thank you
Click to expand...
Click to collapse
If you have custom recovery on your tablet (which you say you do) download the official asus 4.2.1 update firmware. It is in the form of a zip. Inside that zip is another zip, put the latter one mentioned on your sd card and flash it in recovery. Let it boot up. Done. You now have latest bootloader.

I'm going to threadjack here as I have a similar question: How can I confirm the current bootloader version?
When I boot holding pwr+voldwn, in the top left it says:
Android cardhu-user bootloader (1.00 e) released by "US_epad-10.6.1.27.5-20130902" A03​I realize this is the most recent firmware available via the Asus site.
For what its worth:
TWRP v2.6.3.2 is installed
I just flashed the most recently nightly (as of this writing) of CM-12; I must be on 4.2.
I vaguely remember going through a 'zip within a zip' flashing process some time ago. Still, knowing where to look to confirm version info is helpful.