[Q] 4.0.3 to 4.2 Upgrade Clarification - Transformer TF300T Q&A, Help & Troubleshooting

So I've been running the stock 4.0.3 Android on my TF300T for a very long time. at one point Idownloaded the asus provided unlocking tool, unlocked the device and installed CWM 5.5 and IIRC rooted the device in prep to run a custom ROM. I never got around to doing this but now I am ready to get this thing updated to the latest firmware ASUS provides ( V10.6.1.15.3)
There seems to be a mess of issues with the 4.2 bootloaders and such. So being a complete newbie to the world of Android I want to make sure I do not brick my TF300T or ruin it in any way.
As I understand... I can simply download the firmware. Unzip the .zip file to my SD card, boot into the currently installed CWM, install the new 4.2 update and all I will need to do in install an updated recovery for 4.2 afterwards correct?
EDIT: My plan is to use This guide >> http://forum.xda-developers.com/showthread.php?t=2187982 << I just want clarification that I can update to the TeamWin recovery after installing 4.2

Philldoe said:
So I've been running the stock 4.0.3 Android on my TF300T for a very long time. at one point Idownloaded the asus provided unlocking tool, unlocked the device and installed CWM 5.5 and IIRC rooted the device in prep to run a custom ROM. I never got around to doing this but now I am ready to get this thing updated to the latest firmware ASUS provides ( V10.6.1.15.3)
There seems to be a mess of issues with the 4.2 bootloaders and such. So being a complete newbie to the world of Android I want to make sure I do not brick my TF300T or ruin it in any way.
As I understand... I can simply download the firmware. Unzip the .zip file to my SD card, boot into the currently installed CWM, install the new 4.2 update and all I will need to do in install an updated recovery for 4.2 afterwards correct?
EDIT: My plan is to use This guide >> http://forum.xda-developers.com/showthread.php?t=2187982 << I just want clarification that I can update to the TeamWin recovery after installing 4.2
Click to expand...
Click to collapse
Make sure you look into nvflash before you go updating to later firmwares because once you leave ICS you'll lose the option. Im not sure how many people here have access to nvflash because they brought their tf300t with JB pre-installed and dont have the chance to use nvflash as the exploit used is patched. But i was lucky and and took advantage of it while i was still on ICS, i would have bricked my tf300t 10 times over if it wernt for nvflash.
It makes your tf300t unbrickable, and lets you flash back to 4.0.1 bootloader if you have issues with 4.2:good:
And to answer your question yes you can update the 4.2 version of twrp AFTER the update with fastboot

Related

New owner

I just picked up a used TF101 and have been reading the threads learning more about my new ( used ) toy.
The tablet just recently updated itself to ICS 4.0.3 with Kernel 2.6.39.4 & 9..2.1.27 and now I would like to root the device and look at the possibility of loading new roms etc.
I have read the forum until my eyes hurt. Is there someone that can point me at the correct thread to root my device safely?
Thanks
jziggy101 said:
I just picked up a used TF101 and have been reading the threads learning more about my new ( used ) toy.
The tablet just recently updated itself to ICS 4.0.3 with Kernel 2.6.39.4 & 9..2.1.27 and now I would like to root the device and look at the possibility of loading new roms etc.
I have read the forum until my eyes hurt. Is there someone that can point me at the correct thread to root my device safely?
Thanks
Click to expand...
Click to collapse
To get root & custom recovery, the following methods are reported to be working with the latest Asus ROM:
http://forum.xda-developers.com/showthread.php?t=1689193
http://forum.xda-developers.com/showthread.php?t=1681155
http://forum.xda-developers.com/showthread.php?t=1688012
I have personally used the first method about a month ago, no problem with my tf101 and the latest ROM (9.2.1.27)
Aliante said:
To get root & custom recovery, the following methods are reported to be working with the latest Asus ROM:
http://forum.xda-developers.com/showthread.php?t=1689193
http://forum.xda-developers.com/showthread.php?t=1681155
http://forum.xda-developers.com/showthread.php?t=1688012
I have personally used the first method about a month ago, no problem with my tf101 and the latest ROM (9.2.1.27)
Click to expand...
Click to collapse
I've can also vouch for the first method on TF101G with latest ICS ( [TOOL]PERI-0.4 One click root+recovery/fix-bootloops+soft-bricks ALL Devices V0.4). Just install it on the PC, run the .BAT file and follow the instructions to root and install Custom Recovery on the Transformer.
The only issue I've had is that its custom Recovery won't seem flash the ASUS stock ROM for some reason. So what I do now is use the above tool to get root and Custom Recovery, then use that to flash ClockWorkMod Recovery v6.0.1.4 NoTouch Hybrid from http://forum.xda-developers.com/showthread.php?t=1855686 - click the Download link and get the cwm-6.0.1.4-notouch-hybrid.zip file (apparently the Touch version is currently broken).
From CWM recovery you should be able to flash any custom ROM and kernel etc., and also return to stock by flashing the ASUS stock ROM from their download site (make sure you select the right one for your model and unzip it first - for some reason they put the zip ROM inside another zip).
If you do return to stock, don't forget you'll also lose root and custom recovery so you'll need to start over.
Good luck!

Update to 4.2 questions

I haven't updated in a while (still on 4.0.3)
I have CWM 5.5.0.4(it is running a backup right now)
Should I update to stock 4.2 and then root or is there a way I can use CWM now to update.
Reasons: I hear there is a new boot loader for later versions? How does this affect me?
Sora3087 said:
I haven't updated in a while (still on 4.0.3)
I have CWM 5.5.0.4(it is running a backup right now)
Should I update to stock 4.2 and then root or is there a way I can use CWM now to update.
Reasons: I hear there is a new boot loader for later versions? How does this affect me?
Click to expand...
Click to collapse
First, you should consider making a NVFlash backup first, by reading http://forum.xda-developers.com/showthread.php?t=1894867
Nvflash can make your tablet virtually brickproof.
For custom recovery, I think TWRP works better for TF300T. However, as you've researched, for ASUS 4.2 firmwares, you will need TWRP versions with "-4.2" suffix (i.e., openrecovery-twrp-2.5.0.0-tf300t-4.2.blob), since ASUS updated the bootloader.
I would recommend reading/following this excellent guide here: http://forum.xda-developers.com/showthread.php?t=2187982 to upgrade your tablet to Android stock 4.2.1.
To gain root for stock Android 4.2.1 rom, use motochopper: http://forum.xda-developers.com/showthread.php?t=2228613
By the way, if you want to try Cyanogenmod (CM10.1, which is based on Android 4.2.2), DO NOT update to ASUS Android 4.2. Just update to ASUS Android 4.1. Currently, CM10.1 and most custom AOSP-based rom will only work with ASUS Android 4.1 bootloader. They won't work with the new bootloaders that came with ASUS firmware 10.6.1.8 and 10.6.1.15.3.
Sora3087 said:
I haven't updated in a while (still on 4.0.3)
I have CWM 5.5.0.4(it is running a backup right now)
Should I update to stock 4.2 and then root or is there a way I can use CWM now to update.
Reasons: I hear there is a new boot loader for later versions? How does this affect me?
Click to expand...
Click to collapse
ImmovableObject said:
First, you should consider making a NVFlash backup first, by reading http://forum.xda-developers.com/showthread.php?t=1894867
Nvflash can make your tablet virtually brickproof.
Click to expand...
Click to collapse
I second this suggestion. I'd also like to add that this suggestion isn't just a suggestion. It's a requirement if you would like to take advantage of NVFlash. NVFlash backups MUST be done before you upgrade to the Jellybean OTA. The NVFlash procedure only works with the ICS bootloader, and there is no way to go back to ICS once you upgrade to Jellybean.

Bootloop and/or Bricked

Hello,
After a couple of months on cm10.1 on my TF300T 32GB, I wanted to try another rom. I was (and still am) on TWRP v2.2.1.5, and after flashing a new rom (I think it was grimlock) it booted, but would crash after a minute or so of not doing anything. Deciding to flash another rom, I flashed paranoid android and it would never boot anymore. So that is my problem, I am completely stuck, and because I can't boot into android anymore, I can't place any files on my internal SD card to flash.
Is my TF300T beyond repair? Will I have to send it back? I also need some explanation on how Bootloaders/Recoveries/ROMS work on the TF300T, because it's really easy on my Galaxy Nexus but here it's all complicated.
EDIT:
It's also worth mentioning that when starting the tablet while powered off with the onbutton+volumedown it will say that the following bootloader is installed:
"WW_epad-10.4.2.13-20120907" a03
Your tab is not bricked but you are going to need micro sd or mount internal memory via twrp to put roms on your tablet
Sent from my HTC Desire C using xda app-developers app
While as above your tablet isn't bricked, flash the latest version of twrp with fastboot, "fastboot flash recovery *name-of-file*" then move a 4.1 compatible rom over to your tf300 and flash it (id suggest the latest stock firmware from Asus but its up to you)
Its pretty easy on the tf300t, but Asus in their infinite misguided wisdom decided to release a new bootloader with their 4.2 firmware that wasn't compatible with kernels built on prior sources, So now we just have to check if the rom/kernel you are flashing is compatible with the bootloader you're on, 10.4.x.xx is the old bootloader and 10.6.x.xx is the new bootloader, (devs call these bootloaders 4.1 and 4.2 bootloaders because of the versions of android they were released with, the bootloaders themselves are capable of running either 4.1 or 4.2 versions of android.)
Twrp is a recovery and a recovery is a kernel, so if you flash a version of twrp that isn't compatible with your bootloader version, it will not function correctly. Plenty of thread that should point you to the right version.
noahvt said:
Your tab is not bricked but you are going to need micro sd or mount internal memory via twrp to put roms on your tablet
Sent from my HTC Desire C using xda app-developers app
Click to expand...
Click to collapse
JoinTheRealms said:
While as above your tablet isn't bricked, flash the latest version of twrp with fastboot, "fastboot flash recovery *name-of-file*" then move a 4.1 compatible rom over to your tf300 and flash it (id suggest the latest stock firmware from Asus but its up to you)
Its pretty easy on the tf300t, but Asus in their infinite misguided wisdom decided to release a new bootloader with their 4.2 firmware that wasn't compatible with kernels built on prior sources, So now we just have to check if the rom/kernel you are flashing is compatible with the bootloader you're on, 10.4.x.xx is the old bootloader and 10.6.x.xx is the new bootloader, (devs call these bootloaders 4.1 and 4.2 bootloaders because of the versions of android they were released with, the bootloaders themselves are capable of running either 4.1 or 4.2 versions of android.)
Twrp is a recovery and a recovery is a kernel, so if you flash a version of twrp that isn't compatible with your bootloader version, it will not function correctly. Plenty of thread that should point you to the right version.
Click to expand...
Click to collapse
Thank you both. I will try to fix it with the instructions. I am really happy that I don't have to send my tablet for repairs. :fingers-crossed:
I have been on CM 10.1 for sometime but now cannot get anything past the July 6th nightly to boot. Are new CM revisiions only for the 4.2 bootloader?

Any warnings/heads up to offer me? Leaping over many versions...

My TF300T still has the old stock firmware from October 2012 (4.1).
It is unlocked and has TWRP from february 2013.
Now I will be jumping to a current custom firmware (Crombi-kk 4.4).
If I understand correctly, I have to flash the latest STOCK firmware (V10.6.1.27.5 android 4.2) and install the new CWM/TWRP before I can flash a custom firmware.
My main worry is flashing the newest stock rom on my already TWRP/rooted/unlocked TF300T. Will that cause a problem or will the stock firmware wipe everything clean (except for the unlock)?
Also, the unlock utility on Asus's website is made for 4.2 only. When I unlocked my TF300T, it was 4.1. What will happen when I flash the stock 4.2? Will my 4.1 unlock cause problems or will it be wiped, or will it still be effective?
alkizmo said:
My TF300T still has the old stock firmware from October 2012 (4.1).
It is unlocked and has TWRP from february 2013.
Now I will be jumping to a current custom firmware (Crombi-kk 4.4).
If I understand correctly, I have to flash the latest STOCK firmware (V10.6.1.27.5 android 4.2) and install the new CWM/TWRP before I can flash a custom firmware.
My main worry is flashing the newest stock rom on my already TWRP/rooted/unlocked TF300T. Will that cause a problem or will the stock firmware wipe everything clean (except for the unlock)?
Also, the unlock utility on Asus's website is made for 4.2 only. When I unlocked my TF300T, it was 4.1. What will happen when I flash the stock 4.2? Will my 4.1 unlock cause problems or will it be wiped, or will it still be effective?
Click to expand...
Click to collapse
If you would like help with this shoot me an email here [email protected]
We can get you where you need to be and than we can post what we did back here so everyone can see what we did...
Thx Josh
Thanks for your offer. I actually got the green light on the CM 4.4.x Q&A thread.
I read that flashing the CWM for 4.1 would brick your tablet if you had 4.2 installed, so I was worried that flashing 4.2 on top of an existing 4.1 CWM would brick it as well. It turns out it simply removes the CWM entirely. Good times.
Basically what I ended up doing was:
1 - Transfer the latest official TF300T firmware (zip file) onto an SD card.
2 - Start my TF300T with my old (4.1) CWM recovery and select to flash my android with the zip file on the SD card.
3 - The TF300T bootloader stayed unlocked, but the old CWM was gone.
4 - Using ADB: Upload & flash the new CWM Philz Touch
5 - Install/flash the desired custom rom (from within CWM using SD card)
6 - Restore to factory default (from within CWM)
Now I even installed Grimlock's kernel to allow overclocking.
My TF300T has a new life. It is now very much acceptable in terms of speed.

New User with unlocked device looking for help

I recently bought a TF300t second hand and I really need some help! Some years back I was playing around with custom roms on Android devices but im very out of touch.
I would like to install one of the more recent roms on this device. Any suggestion here appreciated.
The device has already been rooted and has TWRP v2.6.3.1 installed. I understand that I need to upgrade this to 2.8. to install the latest roms but im having issues doing that. For a start im unsure how to find out if I have the latest Bootloader 4.2
I really dont want to brick this device!
I tried using ADB to update TWRP but the usb connection never seemed to find my device in the right mode.
The device is currently running Android 4.2.1
Custom ROM CROMi-Xenogenesis 5.4 - 10.6.127.5 WW ODEX.
Any help and advice really appreciated )
tsddave said:
I recently bought a TF300t second hand and I really need some help! Some years back I was playing around with custom roms on Android devices but im very out of touch.
I would like to install one of the more recent roms on this device. Any suggestion here appreciated.
The device has already been rooted and has TWRP v2.6.3.1 installed. I understand that I need to upgrade this to 2.8. to install the latest roms but im having issues doing that. For a start im unsure how to find out if I have the latest Bootloader 4.2
I really dont want to brick this device!
I tried using ADB to update TWRP but the usb connection never seemed to find my device in the right mode.
The device is currently running Android 4.2.1
Custom ROM CROMi-Xenogenesis 5.4 - 10.6.127.5 WW ODEX.
Any help and advice really appreciated )
Click to expand...
Click to collapse
Android 4.2.1 is newest official.
10.6..... is bootloader version - newest there is.
flashing recovery and/or ROM will not overwrite bootloader - it stays the same.
You can go to twrp official website and get 2.8.0.1-4.2 blob to flash (unless your target rom states different version needed - see 1st post of yout target thread) - I got it from there - flashed KatKiss using it.
ADB - when android is running.
fastboot - on bootloader screen (booted with voldown+power - RCK / android / wipe data icons) - used to flash twrp blob
Sent from my TF300T using XDA Free mobile app
th3cr0w said:
Android 4.2.1 is newest official.
10.6..... is bootloader version - newest there is.
flashing recovery and/or ROM will not overwrite bootloader - it stays the same.
You can go to twrp official website and get 2.8.0.1-4.2 blob to flash (unless your target rom states different version needed - see 1st post of yout target thread) - I got it from there - flashed KatKiss using it.
ADB - when android is running.
fastboot - on bootloader screen (booted with voldown+power - RCK / android / wipe data icons) - used to flash twrp blob
Sent from my TF300T using XDA Free mobile app
Click to expand...
Click to collapse
Ok got it all fixed now. Thanks!
So, not to hijack, but I'm actually in a similar boat. I'm currently rooted and unlocked on 4.1.1 TWRP 2.3.3.0 and am looking to flash the new 5.0 Rom.
Does anyone have a handy guide on what I should do? Do I just need to flash a 4.4 compatible TWRP version, then flash the ROM? Would like to avoid bricking my tablet.
jaydotelloh said:
So, not to hijack, but I'm actually in a similar boat. I'm currently rooted and unlocked on 4.1.1 TWRP 2.3.3.0 and am looking to flash the new 5.0 Rom.
Does anyone have a handy guide on what I should do? Do I just need to flash a 4.4 compatible TWRP version, then flash the ROM? Would like to avoid bricking my tablet.
Click to expand...
Click to collapse
Yes here you are ....
Get the SKU from your bootloader screen .....
Then go to the Asus website and get the firmware for your SKU ending in 27.5 ...
Then unpack the zip and there will be another zip unzip it you will find a file called blob ....
Flash this blob from fastboot ...
Thx Josh

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