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    Elk M1XSP - can I use for RP?

    I just bought a used Elk M1XSP. I got it added to the Elk M1, changed the firmware from Uplink back to standard serial expansion. Removed the J5 power jumper. Made a cable. When I try to connect with RP2 I get "incorrect serial number or incorrect remote programming code". Baud rate is 9600...