this is waht i got from XDA tried the sd card and it worked
Part 1: Restoring Tablet to Stock
1. Download the system dump that matches your current software:
9.4.2.28
WW -
http://dlcdnet.asus.com/pub/ASUS/Eee...teLauncher.zip - MD5 - 68D41197B399967B7F6789E47683A0D7
US -
http://dlcdnet.asus.com/pub/ASUS/Eee...teLauncher.zip - MD5 - DF17D3129378E9A7F81C58AF7BF5396B
TW -
http://dlcdnet.asus.com/pub/ASUS/Eee...eLauncher.zip- MD5 - 3999B0E052211AA53ED1DB5D06A02AD3
2. Unzip the compressed firmware file to the root directory of a MicroSD card (external). Only extract this once so your sdcard should look something like this:
/MicroSD/US_epad-user-9.4.2.28.zip
3.With your Transformer turned on, insert the MicroSD into the MicroSD card slot.
4. An exclamation mark should appear in the notification area.
5. Tap the mark and proceed with the update.
6. Your tablet should now reboot and proceed to update the tablet, if you get an error try redownloading the update and trying again.
Part 2: Rooting your Tablet
Voodoo root keeper didn't save my root after part 1, so to root it I used Debugfs automated root:
http://forum.xda-developers.com/show....php?t=1706588
After your tablet is rooted you should use OTA root keeper to backup your root.
Part 3: Manual Update to Jellybean
1.Download the dlpkgfile for your system, I uploaded the US file:
dlpkgfile
2. Place the dlpkgfile on your tablet's storage.
3. Download ES File manager and go to settings>root settings and tick all the boxes.
4. Copy dlpkgfile to /cache
5. Go to /cache/recovery and create a new file named command
6. Open the file as a text and place the following code in it and save:
--update_package=/cache/dlpkgfile
7. Turn off the tablet
8. Press and hold volume down+power until the tablet vibrates then release power and keep holding volume down
9 When a text shows on the boot logo screen release volume down and click volume up
10. The tablet should now start updating, it'll take about 30 minutes and once the tablet boots you'll have jellybean
11. Restore root with root keeper
This method should work for everyone with a locked bootloader
XDA URL :
[How-To] Update to Jellybean if you're having problems with OTA - xda-developers