So I'm trying the firmware update to from v 1.0 to v1.21 and when I turn the camera on with the menu button depressed nothing happens and the camera starts normally and no firmware update screen appears.

[Adam]

So I'm trying the firmware update to from v 1.0 to v1.21 and when I turn the camera on with the menu button depressed nothing happens and the camera starts normally and no firmware update screen appears.

You probably haven't copied the right firmware file to the right place. There should be a .BIN file in the root of the SD card, outside of any folder. If you're using the K-3, only SD1 can be used for updates. Good luck!