RAW files from an MX ?

In the shooting mode, press the MENU button. Use the cursor keys to select "Recorded Pixels".Select the desired image size and press the OK button. Press the MENU button to exit the menu.

Full details are in the "Selecting the Recorded Pixels" section of the manual (page 75 in my copy). If you need a manual, you can download a copy at
http://www.pentaximaging.com/files/manual/Optio%20M10_web.pdf

Theres a firmware update, try this

http://www.4shared.com/dir/2953073/a0908d81/sharing.html

http://www.pentaximaging.com/files/manual/OptioMX4_PC_Web_01.pdf

http://www.pentaximaging.com/files/manual/OptioMX4_Web_02.pdf

Try formatting the card, It probably contains files that are not deleted. You format the card in the setup menu. Make sure you have saved all images to the computer before formatting.

I had the same problem, basically all you need is a RAW converter, the canon software should do and should be provided with the camera and if you havent got that then there is a wide selection of free software on the internet im sure of it just search for it, or a lot easier not to use RAW in the first place...

Go to the menu for the camera and look for "SAVE". you should have the choice in which format to save the pictures. Select "RAW" and then exit the menu. The camera should now save in RAW format. Some one or something probably switched the setting (such as reset camera).

Some cameras will shoot RAW + JPEG, and save a copy of each in a different directory on the card.

Re-check your owners manual, and also check the manufacturer's website for a firmware update...

Photoshop does support the RAW file type. But you have to install a plugin for it to work. The installation is pretty simple.

go to http://www.adobe.com/downloads/
it is in there.

OK Guys...After fidgitting for hours on this with the bits & pieces on this forum & on others...here's how I got it to finally work:

A- I have a Pentax Opio S hence I had to get the "fwdc110p.bin" file here:

http://www.pentax.de/mediapool/attachments/photo/100/104/46139/fwdc110p.zip

Optio S4, S4i & S5i shall use another file. Don't really know for S4 but for S4i & S5i, there on the Pentax customer service website at:

http://www.pentaximaging.com/customer_care/software_firmware?sfFlag=f

B- Drop this file on your SD Card at the root directory (same level as DCIM folder) or as described by the following link and then close your camera to OFF:

http://www.pentaximaging.com/customer_care/show_firmware?firmId=1020

Attention: Do not load this file yet onto the camera i.e. the menu+power on procedure, follow step C first...

C- Open the now infamous "Secret Menu" in order to re-initialize your camera prior to re-installing the new firm ware:

Simultaneously press MENU + Flash symbol button + Power ON...a white screen with data written in black should show.

Then a sequence of buttons must be pressed: 2 times the focus button (flower, mountain, MF symbols button) followed by 2 toggles to the Right of the "OK" button...then press MENU once and voilà...ze Secret Menu appears !

Using the down toggle of the OK button, go to "SYSTEM INITIAL" and press OK. Press another OK to re-initialize your camera.

Once this has been completed, turn your camera off.

D- Load the firm ware by opening your camera with the MENU+Power ON procedure...finally this should be posting "Complete" after the "Loading" message, instead of the "Error!" that we initially kept on having.

Your camera should be working perfectly ! Only thing, is that you will have to redo your personal settings on it from scratch...but hey, this is much better than to wait for months to get your camera back from Pentax and save that money for your next photogenic trip !

http://www.badongo.com/file/707791
You can download the file from the above site - I think this might be the exact reference. Then go to the most recent entry on this site for the secret menu process http://forums.steves-digicams.com/forums/view_topic.php?id=82905&forum_id=24&highlight=A90

Rember to place it on your card at the same level as the DCIM file, not inside it like I did at first. It came zipped so you will need to use Winzip. I will now try and polish this a bit on that site while it is still fresh in my mind.