[HOW-TO] [Experimental] Flash the TF300 JB Firmware on the TF700 [Updated 09-17-2012]

You can revert to the ICS bootloader with the .30 firmware following instructions below only using .30 firmware instead of the JB Firmware.

Thanks goes to saltxyz for this find.

I think we've taken this thread about as far as it can go information wise. Please join me in my new thread here: http://xdaforums.com/showthread.php?t=1886877

Thank you everyone for taking the plunge with me, the Thanks, guidance, and making this a newsworthy thread!

You can download my custom kernel here or below: https://www.dropbox.com/sh/ay9iolwcfbxu0wm/_vpRpSQ6nK/kernel.zip

STOP

1. I am not responsible for any issues this may cause your device and won't be held for any soft-bricks, hard-bricks, boot loops, exploding pets or Resonance Cascades.
2. Go ahead and download ADB/Fastboot to make your life easier: http://developer.android.com/sdk/index.html


What Works/Doesn't Work

What Works:
Almost everything!

What Doesn't Work:
Changing Brightness Settings without the use of a Third-Party App
Resolution (DPI is set to 160 by default and changing it through an App or directly with build.prop makes no changes) - FIXED


You WILL lose Root and Custom Recovery with these methods


Drivers

I used the ASUS Android USB Drivers from the following post for ABD/Fastboot: http://xdaforums.com/showthread.php?t=1706588


Installation

Method 1 for Locked/Unlocked Bootloader with Stock Recovery and/or Root

1. Power off your tablet
2. Download the latest TF300T firmware (XX_epaduser_10_4_2_9_UpdateLauncher.zip) from Asus site based on your SKU location (eg. ww, US, etc): http://support.asus.com/Download.aspx?SLanguage=en&m=ASUS Transformer Pad TF300T&p=20&s=16
3. Right click and extract the downloaded .ZIP file (XX_epaduser_10_4_2_9_UpdateLauncher.zip) onto your desktop
4. Rename the extracted .ZIP to "EP201_768_SDUPDATE" (without the " ") and copy it to your MicroSD card
5. Insert the MicroSD card in your tablet
6. Boot your tablet into Recovery by pressing and holding Volume Down AND Power for 5 seconds
7. A message will inform you that you have 5 seconds to enter Recovery; press Volume Up before the 5 seconds expire
8. At this point the device will go in recovery and should start updating your firmware


Method 2 for Unlocked Bootloader with Custom Recovery and/or Root

1. Power off your tablet
2. Download the latest TF300T firmware (XX_epaduser_10_4_2_9_UpdateLauncher.zip) from Asus site based on your SKU location (eg. ww, US, etc): http://support.asus.com/Download.aspx?SLanguage=en&m=ASUS Transformer Pad TF300T&p=20&s=16
3. Right click and extract the downloaded .ZIP file (XX_epaduser_10_4_2_9_UpdateLauncher.zip) onto your desktop
4. Copy the extracted .ZIP (XX_epad-user-10.4.2.9.zip) to your MicroSD card
5. Insert the MicroSD card in your tablet
6. Boot your tablet into Recovery by pressing and holding Volume Down AND Power for 5 seconds
7. A message will inform you that you have 5 seconds to enter Recovery; press Volume Up before the 5 seconds expire
8. From your recovery menu press Install and select the .ZIP file (XX_epad-user-10.4.2.9.zip)
9. Wait until the install process ends and then restart your device


Method 3 Advanced using Fastboot

1. Power off your tablet
2. Download the latest TF300T firmware (XX_epaduser_10_4_2_9_UpdateLauncher.zip) from Asus site based on your SKU location (eg. ww, US, etc): http://support.asus.com/Download.aspx?SLanguage=en&m=ASUS Transformer Pad TF300T&p=20&s=16
3. Right click and extract the downloaded .ZIP file (XX_epaduser_10_4_2_9_UpdateLauncher.zip) onto your desktop
4. Right click and extract the new .ZIP file (XX_epad-user-10.4.2.9.zip) onto your desktop; you should now have the blob binary and META-INF folder on your desktop
5. Copy the blob binary to your platform-tools folder (C:\Program Files\Android\android-sdk\platform-tools or C:\Program Files (x86)\Android\android-sdk\platform-tools)
6. Plug tablet into your computer
7. Boot your tablet into Fastboot by pressing and holding Volume Down AND Power for 5 seconds
8. A message will inform you that you have 5 seconds to enter Recovery; press Volume Down twice to select Fastboot and then Volume Up before the 5 seconds expire
9. Open a command prompt and cd into your platform-tools folder; or press right-Shift on your keyboard and right-click the platform-tools folder and click "Open command window here"
10. Enter the following command in the command prompt: "fastboot -i 0x0B05 flash system blob" (without the " ")
11. Once the previous command completes enter: "fastboot -i 0x0B05 reboot" (without the " ")


RECOMMENDED but Optional Steps:

If you are using Stock Recovery it is advised to Factory Data Reset or Wipe Data both BEFORE and AFTER the Firmware Upgrade

If you are using Custom Recovery it is advised to wipe ALL partitions


Unlocking the Bootloader
You can use the ASUS Unlock Tool from the ASUS Support site to unlock your bootloader. Despite ASUS saying it's for ICS it works fine on JB. Detailed instructions to come.


Recovery (TWRP) **Requires Unlocked Bootloader**

1. Turn your tablet off
2. Download the latest TWRP blob: http://teamw.in/project/twrp2/105
3. Rename the blob binary (openrecovery-twrp-X.X.X.X-tf700t.blob) to "twrp.blob" (without the " ")
4. Copy the twrp.blob binary to your platform-tools folder (C:\Program Files\Android\android-sdk\platform-tools or C:\Program Files (x86)\Android\android-sdk\platform-tools)
5. Plug tablet into your computer
6. Boot your tablet into Fastboot by pressing and holding Volume Down AND Power for 5 seconds
7. A message will inform you that you have 5 seconds to enter Recovery; press Volume Down twice to select Fastboot and then Volume Up before the 5 seconds expire
8. Open a command prompt and cd into your platform-tools folder; or press right-Shift on your keyboard and right-click the platform-tools folder and click "Open command window here"
9. Enter the following command in the command prompt: "fastboot -i 0x0B05 flash recovery twrp.blob" (without the " ")
10. Once the previous command completes enter: "fastboot -i 0x0B05 reboot" (without the " ")


Root **Requires Unlocked Bootloader AND Custom Recovery**

1. Download the latest Custom Recovery installable SuperSU .ZIP (CWM-SuperSU-vX.XX.zip): http://xdaforums.com/showthread.php?t=1538053
2. Plug tablet into your computer
3. Copy the SuperSU .ZIP (CWM-SuperSU-vX.XX.zip) to Internal Storage
4. Turn your tablet off
5. Boot your tablet into Recovery by pressing and holding Volume Down AND Power for 5 seconds
6. A message will inform you that you have 5 seconds to enter Recovery; press Volume Up before the 5 seconds expire
7. From your recovery menu press Install and select the SuperSU .ZIP (CWM-SuperSU-vX.XX.zip)
8. Wait until the install process ends and then restart your device
9. Now your tablet should be rooted

F.A.Q.


JB seems to be laggy. Any suggestions?
Yes, Wipe!! Even if you've performed a Factory Data Reset or Wipe Data I HIGHLY recommend unlocking your bootloader, installing a Custom Recovery, wiping EVERYTHING and installing the firmware again; preferably using Method 3.

Is there any way to change the Brightness settings?
Yes, through Third Party Apps. The most popular seem to be Lux and Custom Brightness Settings

Are we "SOL" having the TF300 Bootloader when the Tf700 JB Firmware comes out?
Personally I'm not too worried about the bootloader.
Either the official JB for TF700 will have the same bootloader as for the TF300, or it will be a newer version that we'll be able to flash.
The bootloader doesn't seem to be looking for a device check or else the 300 loader wouldn't have installed on the 700.
It really only seems to be doing a sig check for OLDER firmwares, not NEWER.

Why don't we have an Official TF700 JB Firmware yet?
I don't know, ask ASUS. I'm as flabbergasted as you are. We've only found two issues so far!!

UPDATE UPDATE: Kernel configs are also amazingly identical. Most new options available in the JB 3.X kernel aren't even set. Only things that stick out are that CONFIG_SENSORS_ISL29028 (Light Sensor driver) went from yes to not set. Also I keep seeing NFC code EVERYWHERE which is disabled in JB stuff. Does the TF700 have NFC or is ASUS pulling from one base? <-(Hmmm...) CONFIG_NTFS_FS has also been set to yes in JB so we should check out NTFS formatted SDCARDs. Also fun fact; CONFIG_ISO9660_FS (CD/DVD Filesystems) was set to yes in the ICS kernel. LOL. Everything we need is there, somethings just stopping it. It's funny looking through the code you can tell it was written by two different teams as most times configs contain the same info, only in a different order. Makes it hard to compare code though; jerks. No wonder it's not officially out yet.

UPDATE: I just finished comparing /system between the TF300 JB blob and the TF700 ICS blob. 98% of the config files are similar or are only off by a line or two. Issues with screen resolution and brightness seem to be stemming from kernel. I'm gonna see if I can rip the ICS kernel out and transplant it in JB or recompile the TF300 kernel using the config from ICS. They jumped from 2.6.X to 3.X so who knows...

fordwolden said:

Is there a reason you need to name it recovery.zip? I just named it 300jb.zip, been installing for almost 30 mins here!

Unlocked bootloader, custom recovery and complete wipe.

Sent from my GT-I9300 using xda premium

Click to expand...

Click to collapse

Nope, just going off what most people named it.

Keion said:

I would much prefer it if we could install a custom ROM from our bros over at the TF300 forums.
Do those work as well or is it just the ASUS stock stuff?

Click to expand...

Click to collapse

One guy said it flashed ok, another said no.

Sent from my EVO using xda premium

kabauterman said:

Hopefully the TF700 JB Update would be able to flash over the TF300 JB Bootloader, otherwise we will stuck at this "not so perfect"-build for a very long time!

I miss the DPI changing I'm not blind and everything is so ****ing big on the screen.

Guys, did someone else see that the Battery is going low pretty much faster?

Click to expand...

Click to collapse

Personally I'm not too worried about the bootloader. Either the official JB for TF700 will have the same bootloader as for the TF300, or it will be a newer version that we'll be able to flash.

The bootloader doesn't seem to be looking for a device check or else the 300 loader wouldn't have installed on the 700. It really only seems to be doing a sig check for OLDER firmwares, not NEWER.