For those who rooted but are still locked, and having issues with updating, here's something that might help (continuing from: http://forum.xda-developers.com/show...ostcount=111):

There were 3 files missing from /system/xbin that were required for the update to work.

Missing files:
http://www.mediafire.com/?cqccrt70xyrxjwz
Edit: Dropbox mirror: http://db.tt/4Q6AvTCU

The US update file (thanks Wipeout and Bait-Fish): http://www.mediafire.com/download.php?zzg4pjccz0od9uo
CRC32: 5F044C22
MD5: C7F2DDC50DB3E96673977E41CEB643D6
SHA-1: 6966DE005C9E83A968025673B187884E375BB680

The WW update file (thanks for kikistans for uploading):
http://dropbox.com/s/uiui6ha6hrg2mg1/dlpkgfile
Downloading and will add a Mediafire mirror as soon as I can.

Here's what I did, from beginning to end:

• Extract the above zip and put the three files on the main storage.
• Copy the dlpkgfile to the main storage
• Enter shell:
• SU
• mount -o remount,rw /system
• cp /mnt/sdcard/dexdump /system/xbin/dexdump
• cp /mnt/sdcard/ps3bttest /system/xbin/ps3bttest
• cp /mnt/sdcard/rfcomm /system/xbin/rfcomm
• chmod 777 /system/xbin/dexdump
• chmod 777 /system/xbin/ps3bttest
• chmod 777 /system/xbin/rfcomm
• mount -o remount,ro /system
• cp /mnt/sdcard/dlpkgfile /cache/dlpkgfile
• echo '--update_package=/cache/dlpkgfile' >> /cache/recovery/command
• Exit shell.
• Shut down tablet.
• Turn on while holding the "volume down" key.
• When it vibrates, release the power key and keep holding the volume key.
• Three lines appear, hit "Volume UP".
• Update starts!
• Update Finishes!

Note: some users reported success after replacing the build.prop with the one attached here (ripped from the .28 blob).

Attached Files

build.zip - [Click for QR Code] (1.1 KB, 291 views)