A new firmware has been sent out for the Panasonic S1
- Improvement of accuracy in exposure during burst shooting.
- Improvement of accuracy in flash sync performance.
Dont fall into the trap of including all the folders in the SD card or you will not be able to start the update.
You can get the FW here…https://av.jpn.support.panasonic.com/support/global/cs/dsc/download/index4.html