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powershot a495

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Offline pcdude2143

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    powershot a495
    « on: 01 / April / 2010, 21:08:46 »
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    I wish for the Powershot A495 to be supported, and I've tried to take steps to help the developers (for I am not one), such as finding version information and such. The ver.req and vers.req do not work. Version.req does not either. I tried pressing funcset + down as recommended for another camera and nothing happened. I also tried using the NewDryOS dumper. It did freeze the camera, but the empty.dum was empty when I string-tested it. I also tried the DryOS dumper. I did not try VxWorks because the camera is a new model.

    I also tried getting another CHDK for an extremely similar camera to work, the A480 firmware. The A480 has a virtually identical button layout, body, and processor, so I thought maybe it would work. I got a "Firm Update" option in the menu, but it immediately gave an error, probably because of some sort of checksum or model code built into the firmware file.

    I was able to retrieve some info from the camera by using the CameraVersion tool:

    camera: Unknown (0x2800000) version 100 D

    Canon Firmware Version: Firmware Version 1.00
    Canon Model Id: Unknown (0x2800000)
    Firmware Revision: 1.00 rev 4.00
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    Offline reyalp

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    Re: powershot a495
    « Reply #1 on: 01 / April / 2010, 21:22:27 »
    CHDK for a different camera (e.g. a480 on a495) will never work, even if they are very similar. Different firmware versions of the same camera frequently need their own ports.

    a495 is a new camera, so it is expected that existing udumper will not work. Dumping will require either a modified udumper or using the blinking method.
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    Offline pcdude2143

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    Re: powershot a495
    « Reply #2 on: 05 / April / 2010, 23:22:31 »
    Thanks. I'll probably try the blinking method. It seems easier.
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    Offline pcdude2143

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    Re: powershot a495
    « Reply #3 on: 05 / April / 2010, 23:27:50 »
    I'm hoping that the blinker method can go through the AF assist light. The standard LED is probably too tiny to be picked up by my cheap sensor.
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    Offline pcdude2143

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    Re: powershot a495
    « Reply #4 on: 07 / April / 2010, 02:12:31 »
    I finally found the blinker code after running around forever. The wiki is one massive jumble. So I tried to compile the LED address scanner. It comes up with a 1.5K file called main. I'm not sure what I'm supposed to be doing from this point.
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    Offline pcdude2143

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    Re: powershot a495
    « Reply #5 on: 14 / April / 2010, 15:08:45 »
    bump.
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    Offline reyalp

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    Re: powershot a495
    « Reply #6 on: 14 / April / 2010, 22:02:40 »
    Quote from: pcdude2143 on 07 / April / 2010, 02:12:31
    I finally found the blinker code after running around forever. The wiki is one massive jumble. So I tried to compile the LED address scanner. It comes up with a 1.5K file called main. I'm not sure what I'm supposed to be doing from this point.
    It would help if you linked to the specific thing you were trying to use.
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    Offline asm1989

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    Re: powershot a495
    « Reply #7 on: 15 / May / 2010, 04:47:36 »
    pcdude2143 , whats your status on the blinking?
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    Offline pcdude2143

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    Re: powershot a495
    « Reply #8 on: 27 / May / 2010, 20:31:40 »
    I actually haven't gotten to it yet. I'm not really sure what I should be doing next.
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