Upgraded Eee Slate EP121 BIOS, still lame

I started putting company document on my Eee Slate 121, and thought that I should start taking security on my tablet seriously and tried to install BitLocker.  I then realized that BitLocker did not turn on on my machine.  Futher looked into it and I found that I need to turn on TPL on my BIOS.  So I went and checked, and couldn't find the checking.  I also realized that my BIOS was not up-to-date.  So I was like, first thing first, let me update the BIOS.

Updating BIOS on EeeSlate EP121 is actually pretty straight forward .... if you know how to do it.  The problem is that there's no clear instruction on Asus' official web site at all.  All you got is the download link.  So here's the steps I did:

1. Get BIOS file from official ASUS site.
2. Extract BIOS file (EP121AS_704.rar to EP121AS.704)
3. Put the file in a FAT32 (FAT may also work) thumb drive.
4. Connect that thumb drive to EeeSlate.
5. Start the machine while holding F2.
6. On BIOS screen, select EZ BIOS Utility.
7. Navigate to the BIOS first, and start flashing.

Sadly, even after I flashed the BIOS, I saw no TPL option showing up.  I also didn't see any improvement that I care, including the serious Wacom Digitizer alignment problem. At the end, time spent, and I gained nothing.  Great.