[Xoom Q&A, Help & Troubleshooting] kwhy:
Went from stock Wifi Only US Honeycomb 3.2 non rooted to Tiamat Katana 2.0 via this method below.

I had a few hicups and now I'm wondering if anyone can enlighten me on where I went wrong.

First Unlocked and Rooted my Xoom Wifi via this thread

http://xdaforums.com/showthread.php?t=1170760

PROCEDURE

* Download and place rooted boot image file, superuser.apk & su binary in the same place you will open your command window.
*
Open command window and type; adb reboot bootloader
*
Type fastboot oem unlock and follow the steps on your xoom's screen (You have to accept the terms by pressing the volume down key, and then select 'accept' by pressing the volume up key.)
*
Allow the xoom to boot up completely and go back into settings and enable USB debugging again.
*
In the command window on your PC type; adb reboot bootloader
*
Type; fastboot flash boot rootboot.img
*
Type; fastboot reboot
*
Allow the xoom to boot completely
*
In the command window on your PC type; adb remount
*
Type; adb push su /system/bin
*
Type; adb shell
*
Type; ln -s /system/bin/su /system/xbin/su (this line starts with lower case "L", like llama)
*
Type; chmod 4755 /system/bin/su
*
Type; exit
*
Type; adb push Superuser.apk /system/app

I then installed Rom Recovery. Let it install Clockwork Mod Recovery. I Backed up my xoom with Clockwork via Rom Recovery.

I then downloaded this Tiamat Kernel zip file

Version 2.0.0 "Katana" - Stock GPU

MD5sum: 1fd6a9dfe9c977d53483cb87be258687

see this thread...

http://xdaforums.com/showpost.php?p=11798679&postcount=2

Copied that file to my actual Xoom's internal drive (not the micro SD card).

*** Maybe this is why I was having problems?! ***

I then rebooted into Clockwork Mod Recovery..

Selected Install Zip, Selected the Kernel file Zip, Hit Yes...The install process completed (saw the Tiamata logo, installing...ect).

reboot...

No changes. I would check /system/lib/modules and there would be no new modules there (1 module only). Also, Android's about screen wouldn't mention any change to the version. So I assumed it wasn't installing.

Tried this about 5 times with the above version... still no luck. The kernel just didn't seem to want to install.

I also tried mounting sdcard first then install zip. After rebooting no changes.

I even tried it once by mounting the system which seemed to work, but then my WIFI wouldn't work (no internet connection error) so I guess certain files didn't copy over or didn't have the right permissions.

At that point I just recovered via clockwork with the first backup which must have mucked up some permissions (superuser not working now). I then from adb shell tried...

su

chmod 4755 /system/bin/su

which fixed things..

I then tried a different kernel version from

http://xdaforums.com/showpost.php?p=11798679&postcount=2

Version 2.0.0 "Katana" - Overclocked GPU

MD5sum: f6d64e4e81d2ac050ac1c603b1dbae84

once again copied (was already on my internal card) to the xoom. I might have selected *mount sdcard* first before installing zip via clockwork this try.

Rebooted. Everything installed properly. I now have CIFS working correctly via cifs manager and Tiamat version showing correctly now in Android about settings.

So was trying to install from the internal drive the issue?