OK, when you push the OK button the screen shows me four options; mode menu is to the right. This screen can be customized some but I think mode menu to the right is stock. Choosing mode menu (button to the right of OK button) takes you to the mode menu screen, with camera, pic, card, set going down the left side of the screen. Pushing the button below the OK button three times (or the button above the OK button once) puts you in set mode. Pushing the button to the right of the OK button takes you to the first (top) line on the screen; ALL RESET. Pushing the button right of the OK button again gives you the options of ON or OFF. This is my third or fourth 5050. The first one stayed in raw from the first day after choosing OFF. The other two reverted back to SHQ every time I changed the batteries. I did one dive without changing and it was a dive I wish was shot in raw. Now I always remember to change to raw right after powering on with new batteries. I use MyModes for strobe images. Not only do I get to use the low power slave single flash, I get to chose both the card and the file format (CF / raw). The MyModes does not change luckily. I was less that particular with my last reply and compensated by being more than particular this time. Should not have called it the power off reset before, even though that is what ALL RESET does.