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Pentax K-5 II and K-5 IIs Firmware v1.03

Exposure improvements with AA batteries · 03-07-2013 · By PF Staff in Firmware Updates
Pentax K-5 II and K-5 IIs Firmware v1.03

Pentax has just posted a firmware update for the Pentax K-5 II and K-5 IIs on the Japanese support site.  Firmware version 1.03 fixes stability bugs and improves exposure performance when using AA batteries via the battery grip.

User reports suggest that this firmware also corrects an issue with bounce flash exposure.

Quick download links (from Pentax.jp):

Pentax K-5 II Firmware Update Instructions

  1. Download the firmware ZIP file corresponding to your camera
  2. Extract the file to a folder of your choosing
  3. Locate the extracted .BIN file and copy it to the root (top) of a formatted SD card
  4. Insert the card into your camera and ensure it is fully charged
  5. Turn the camera power on while pressing the MENU button
  6. Select "Yes"at the firmware prompt
  7. Once the screen displays "Complete", turn off your camera
  8. Power your camera back on and resume normal use
  9. In order to verify that the firmware update was successful, hold the menu button while powering your camera on.  The screen should indicate version 1.03.  You should then power off your camera and resume normal use.

To learn more about the Pentax K-5 II and K-5 IIs, take a look at our in-depth review!

PF Staff's avatar
About the author: Various writers regularly contribute articles to the Pentax Forums homepage blog. More recent articles are published under each author's forum username. We hope you enjoy our guides and news coverage!

Tags: firmware, k-5 ii, k5 IIs, pentax, update

More Posts in Firmware Updates | More Posts by PF Staff

Next Story: Pentax Q Firmware 1.11 Released

Previous: Pentax K-01 and K-30 Firmware v1.03 Released


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Old_Taoist [Delete] Mar 21st, 2013 6:49PM

I've just bought a K-5 IIs and installed latest version, 1.3, and found that twice on first day's shoot already the camera has "frozen" electronically. The only way to be able to fix it is remove battery, replace and re-start! It may be something to do with so easily accidentally pressing buttons like LV which are too easy to press by accident. I love the camera BUT thumb-grip not ergonomic, buttons too easy to accidentally press, especially with gloves on! The body needs re-design (wider & better thumb-grip angle) and Firmware 1.3 updating to elimintae lock-ups. Bummer, considering the price! It's got real potential; pity that Pentax doen't seem to consult real photographers when designing!!! The battery wa sfine, by the way.

Old_Taoist [Delete] Mar 21st, 2013 6:46PM

I've just bought a K-5 IIs and installed latest version, 1.3, and found that twice on first day's shoot already the camera has "frozen" electronically. The only way to be able to fix it is remove battery, replace and re-start! It may be something to do with so easily accidentally pressing buttons like LV which are too easy to press by accident. I love the camera BUT thumb-grip not ergonomic, buttons too easy to accidentally press, especially with gloves on! The body needs re-design (wider & better thumb-grip angle) and Firmware 1.3 updating to elimintae lock-ups. Bummer, considering the price! It's got real potential; pity that Pentax doen't seem to consult real photographers when designing!!!

davidsladek [Delete] Mar 10th, 2013 4:33AM

Hi guys, I had the same issue with the bounce flash overexposure with my 540FGZ but found an easy solution that only requires a very little skill and short time and, most of all, works!! I was going to give you a link but the comment section wouldn't allow me. So you need to go to DPreview and search for 'P-TTL on K5' thread started by user Vorda. Your fix is in reply by Russell Evans linking to a great find by user JuanCa . Be careful when adjusting!

olypdd [Delete] Mar 9th, 2013 3:15PM

I see. the battery in use is a few months old, and I noticed last night it was showing 3/4 charge approx. I reset the camera and will try the new battery now that it's charged and see what occurs. I expect a few minor bugs to be ironed out in any new software release.

By the way, the body is slightly different and the controls are a little stiffer than the K5, at least the one I had. Maybe I had it well broken in eh? Anyone feel the IIs build is better quality?

Adam [Delete] Mar 9th, 2013 8:38AM

Yes, lockups happen from time to time. User reports suggest that they're intermittent and more or less random (but fortunately rare). I think low battery voltage may have something to do with it.

olypdd [Delete] Mar 9th, 2013 3:50AM

I wonder if any one has had to pull their battery on the K5 IIs. I had no problem with my K5 but twice on a shoot today it seemed to lock up and flash an error code requiring my pulling the battery to reboot it. I have no idea if it is the firmware since I upgraded to it first thing when I received the IIs.

beachboy2 [Delete] Mar 8th, 2013 8:41AM

I'm no flash expert, but K5IIs plus Sigma EF 530DG Super did under expose with bounce previously, now its correctly exposed. I skipped v1.02 and went straight to v1.03.

wtomlin76 [Delete] Mar 8th, 2013 8:10AM

@DSims,

I don't have the background to intelligently discuss Pentax PTTL bounce flash vs. other platform TTL, but my impression from reading this post as well as 1.03 related posts within the forum was that this firmware update fixed overexposure when using bounce flash with the II and IIs. This is not my experience; I noticed absolutely no difference. The reason I listed all of those modes was to demonstrate that I'm not making exsposure errors within the camera. As always, YMMV, and if you've got other recommendations, of course I'm all ears!

It's not hard to set -1.5 FEC, so I'm not complaining; just sayin'.

sirjes2 [Delete] Mar 7th, 2013 9:18PM

I read about an AF speed increase, but did some low-light tests before and after with no noticeable change. Either way, new firmware. yay.

Chatchops [Delete] Mar 7th, 2013 8:46PM

better yet, if they could get some decent supply here in Aus I might be able to actually get one....

DSims [Delete] Mar 7th, 2013 7:14PM

@wtomlin76 - setting flash to around -1.5EV is common regardless of camera brand, so I suppose you're talking about something beyond this?

Although I usually use another K-5 battery in the battery grip, I'll have to give this firmware a try. As long as it doesn't make anything worse I'll be OK with it.

wtomlin76 [Delete] Mar 7th, 2013 6:59PM

Hmm, I love my IIs, but this firmware update did not affect over-exposure while using bounce flash. I'm still going -1.5 or -2 FEC in Av, Tv, TAv, M, or even in green mode.

SyncGuy [Delete] Mar 7th, 2013 6:35PM

OOOooooohhh..... Bounce flash settled? Really? Sweeeet!!
Finally, lesser naysayers!

Usuqa [Delete] Mar 7th, 2013 5:36PM

so why fix the bounce flash on the k5II but not the k5?

olypdd [Delete] Mar 7th, 2013 4:12PM

My IIs arrives today! And here i was all set to install 1.02. Thanks for the news.

Halchemy [Delete] Mar 7th, 2013 3:57PM

Now if they could just issue a firmware update to correct the k-5 flash issues...