Hello nychiker, welcome in the CHDK forum !
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The difference is that GRIZP's PID is 3196 PAL D. Mine is NT. The other difference is his displays the IXUS model number; mine just reports the SD number. Not sure if these are differences without distinctions, but just thought I would try to help along this process.
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Firmware Ver GM1.01A
For CHDK in this case only the firmware version (1.01A in your case) and the PID number (3196) is relevant, PAL/NT and the naming (Ixus / SD) is
not relevant yet...there's also another naming for the japanese market: IXY...