A. How do find out what firmware version for Pentax Camera like K100D?
With the camera off, push and hold the menu button, then turn the camera on. It will show up CURRENT VERSION 1.00/1.01 UPDATE VERSION 1.02.
B. How to update its camera firmware?
copy the firmware to the SD card first, then do the following steps.
1. push and hold the menu button, then turn the camera on.
2. It will show up a "PROGRAM UPDATE" message with YES and Cancel.
3. Press the four-way controller to select "YES" and press the "OK" button.
4. "UPDATING" appears on the LCD monitor and updating starts. It will take approximately 90 seconds to complete update with 2 phases.
5. When update is completed, the "COMPLETE" will be displayed, then turn the camera off.
6. Remove the update SD card from the camera.