How to remove the special offers screensaver, ETC. off of a Kindle 3 (keyboard)

I found this info on a web forum and wanted to share it. I can advise that it does work, I just tested it on my Special Offers Wi-Fi Kindle 3.

Instructions:

If you have a special offer Kindle 3 you need to do the following
to get rid of the Ads.

Note: please be careful doing this I take no responsibility for any loss or damage.

Step 1 Charge up your Kindle make sure you have a full battery.
If you are using Windows make sure the Show hidden files
option in Explorer is ticked.

Step 2 Plug the kindle into your computer via usb
(your kindle should show as a device on your computer)
and copy the kindle documents folder to your computer.
(this contains your kindle books)

Step 3 (CAUTION THIS WILL WIPE ALL INFO ON KINDLE)
(MAKE SURE YOU DO STEP 2)
Eject Kindle and Unplug kindle from usb
Reset your kindle to factory defaults - you do this by pressing
[HOME] then pressing [MENU] click settings in menu list
then pressing [MENU] then click Reset to Factory Defaults.

Step 4 Wait ... then Message about setting up Kindle appears.When you
see this message Plug kindle into your computer via usb
(your kindle should show as a device on your computer)
and find the folder on the kindle called System.
Open this folder and create a text file in this
folder called .assets (this turns off the Ads)

Step 5 Eject Kindle and Unplug kindle from usb and slide and hold the
power switch on the kindle for about 15 secs this should restart
the kindle.

Step 6 The Ads should be gone and now you can set up the kindle and
copy the documents folder that you copied in Step 2 back to the
kindle.

Enjoy the Kindle with no Ads