Hi,
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The firmware for the 83590A I downloaded is not working I'm afraid. When installed the 8350B does not recognize the plugin and stops with a "E001" error.
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The first bytes of the firmware should (according to the service manual) always be "55" and then "AA". I think the startup check looks for that signature specifically and then does a checksum. This firmware does not have that (it starts "55A8") and so will not work. I'm wondering if the ROM image export was corrupted?
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Are any other 83590A ROM image files available?
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many thanks
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Tony
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