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Can anyone help me on how to get the firmware info from my SX20? I have everything needed to make it work (vers.req) but it just shows 1.0.2.0d and O.K. at the end. CHDK work perfectly but this feature doesn't It was working fine a month or so ago. I have formated my SD card and reinstalled CHDK on it but with the same results.

    • Edit* There is no ``d`` displayed at the end of 1.0.2.0. It was an error. I have to put my camera on Auto? Didn`t knew that. I`ll try that later tonight when at home. But if I remember correctly, I had the camera on P mode when it was working a month ago. Thanks anyway, i`ll check for that later tonight.
    • Edit #2
    • Steve Chinook 16:49, October 28, 2010 (UTC)
    • You don't HAVE to, it's easier for everybody to understand "Auto" , The camera has to be on "Play" mode. The "P" is for Program, I have just tried with "Auto, P, Tv, Av, M, Portrait, etc " it works. By Play mode I suppose that it means "Camera is not plugged to the computer with a USB cable"
    • it also works on video mode as long as you are not recording. Video mode with a "still" image works.
    • As of Oct 28, 2010, no changes were made by Canon for the Firmware. Your Firmware for an SX20, purchased in the US is: GM1 02B, with a date of Aug 4, 2009. I would almost bet that: I would eat my shorts, or a case of your best Canadian Ice Wine and/or Domaine Pinnacle Ice Cider. I enjoy the latter a lot.
    • Lol. You are funny man. :)You will have to eat your shorts because my firmware is 1.02D as I remember seeing it when it was working a month ago. I didnt have the vers.req file in both partition either. Only in the small partition and it used to work perfectly. But I will try putting this vers.req file in both partition tonight and see what it will do. Wh en you say that I need to put this file in the root of both partition, what do you mean by ``root``? Right now it is installed in the first partition with the ``boot`` file and that was the way it was before when it was working. I`m lost!!
    • Steve Chinook 19:18, October 28, 2010 (UTC)
    • edit #3 >>>
    • I don't say it, ...Fe50 is saying it. Please, believe him over me.
    • Root means the "top top top" of directories (folders) in the card. If your Card is D:\ You should be in "D:\" and NOT further down, such as D:\Chdk\Recipes\HowtoCookMyShorts\. Go All the Way UP.
    • Firmware: Canon Website says "No Firware Update Available" , page is here: http://tinyurl.com/3ybm4bh but that would not surprise me from Canon.
    • Please note the "almost" before "eat my short". In case you did not notice, I'll go right away purchase one of those Filet Mignon shorts: it seems that there is a 1.02D. I don't know where you Canadian find your contraband.

Steve Chinook 21:41, October 27, 2010 (UTC)


As I am new to CHDK, please take the following with a grain of salt.

You mention Firmware and 1.0.2.0d

1.0.2.0d is the build of CHDK,

The firmware on your Camera, as no new firmware exist (as per Canon)

P-ID:31E4 NT D Firware Ver GM1.02B >> Firmware 1.02B for US/Japan


Version 1.02B

Firmware Ver: GM1.02B NoError


To get the Firmware, If Ver.req / Vers.req are properly installed.

Put the SX20 on "Auto"

start the camera, let fully start.

locate "Func Set"

locate "Disp"

Press "Func Set" and within one second press "Disp"

If you wait too long you'll see a series of rolling cubes displaying the time.

in that case, restart process.


  • Two more notes:
  • With a multi-partition setup and running CHDK make sure the ver.req / vers.req file is placed on the root of both partitions !
  • Capture at least one still image, the file displayed in playback mode should be a still image, not a video !
...Fe50 22:06, October 27, 2010 (UTC)
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