Quote Originally Posted by hamid0006 View Post
any one can give me a link for update k800?
The official Sony Ericsson Update Service (SEUS) site.
Go to Sony Ericsson Mobile Communications and download SEUS 2.7.9.14. Install the aplication an follow the steps required to update your phone.

Unofficialy you can use SETool2Lite 1.08 and XS++ 2.2 to flash/upload into the phone various custom files.