First of all this isn't my first firmware update but the first one with the K1ii. I started trying to update last month but ran into problems, several conversations with tech support yielded no resolution. I had to postpone further updates because of commitments. Now I'm back and have attempted down loads on the update using 3 different computers, all with the same result. Unzip the file, save it to the root directory of the SD card and start the installation process in camera. Once I press start in camera it shows loading for a few seconds then kicks out with the message "could not complete update, there is a problem with the file. Pentax support swears the file is okay and works correctly when they try it. Any ideas?