Question about Pentax Optio S4i Digital Camera

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Loss of button functionality

My Pentax Optio S4i has suddenly lost all functionality of the buttons. When I turn it on it start randomly and automatically shuffling through various auto-timer and flash modes and resolutions. All the buttons adjust the zoom rather than what they are supposed to do. All of this makes it impossible to actually take any pictures, because the mode is constantly changing. I've tried shutting it on and off, removing the battery, giving it a day of rest, but nothing has worked.

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Re: Loss of button functionality

Try loading this Firmware update...
I was having the same problems and my camera works great now after loading the update.

Posted on Nov 06, 2007

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How do I solve my A90 prob?

I just fixed a friends Pentax Optio S4i.
You want to extract this file.
File name : O4IE101W.EXE
Format your SD card in my computer. Open the O4IE101W.EXE on your desktop. It makes the file fwdc124p.bin. Put the fwdc124p.bin on the SD card.
I did save this file on the flash card.

Then I fully charged the battery (I got this from the Pentax site)
I opened the "secret menu" by pressing the MENU-FLASH and the POWER button at the same time.
Once menu opened, I pressed the FOCUS twice then (FLOWER, MOUNTAIN, MF) symbol twice after this two toggles to the right with the OK button.
Then press the MENU button once again.
So the menu screen open now.
Down toggle of the OK button, go to ROM UPDATE then go down to "SYSTEM INITIAL" and press OK. Press another OK to re-initialize your camera.
Once this has been done, turn your camera off.

Turn camera on again opening your camera with the MENU+Power ON procedure...finally this should be posting "Complete" after the "Loading"
When it shows Complete, turn camera off.

You are finished and your camera should be ready to work again.

At least this is how I fixed my friends A90 error message.

The firm ware is here:
navigate to your camera

Feb 27, 2010 | Pentax Optio S4i Digital Camera

1 Answer

I am missing the S-SW20 cd to my pentax optio s4i camera

you do not need a disc for it. use "my computer" or some of the other programs on it.

Aug 25, 2009 | Pentax Optio S4i Digital Camera

3 Answers


OK Guys...After fidgitting for hours on this with the bits & pieces on this forum & on'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:

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:

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:

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 !

Jan 30, 2008 | Pentax Optio S4i Digital Camera

1 Answer

Pentax S5i

I have lost my cd for my optio s5i pentax camera and have a new laptop how can I get another cd or download software so I can transfer photos onto my laptop

Jan 28, 2008 | Pentax Optio S5i Digital Camera

1 Answer

Optio S4i will not turn on?

Your problem is part of the dreaded A90 error code these cameras get. My camera had this last year and updated firmware cured it till this month when my wife let the battery go dead and the problem returned, but firmware update won't fix it this time around.Go to Pentax site and download new firmware for camera. Follow instructions that come from Pentax on the download to install software. Its pretty easy. These are cheap cameras as far as Pentax is concerned. They only work for about 2 years, based on other users and my experience. Good luck

Jan 25, 2008 | Pentax Optio S4i Digital Camera

1 Answer

Connecting OPtio S4i to PC

After formatting my PC to upgrade it I've been unable to install the USB driver software to save pictures from my Tentax OPtio S4i to my PC.

My computer isn't recognising my camera when I plug it into the USB port.

When I've tried to install the Driver using the disk I got with my camera, at the stage where it asks me to MODIFY REPAIR or REMOVE, the software I get the following showing up on display boxes:

Aug 19, 2007 | Pentax Optio S4i Digital Camera

3 Answers

Optio S4i - Freezing problem on green switch

I don't know for sure, but it sounds like it could be a memory card problem. Have you tried it with another card or no card at all? My S4i froze up completely from a bad sd card. The green power button would light up, but nothing else would happen. Pentax recommends Lexar or Panasonic sd cards from what I have heard. My new Lexar card hasn't had any issues.

Sep 08, 2005 | Pentax Optio S4i Digital Camera

1 Answer

Problem in my Pentax s4i

This happens if you go from movie mode into green mode. If this wasn't the case with your freeze, it could be a problem with the memory card.

Sep 08, 2005 | Pentax Optio S4i Digital Camera

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