try updating it thru the EOS utility. That way you can bypass the card.
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Boy am I feeling old.. Astrophotography was the first thing that interested me. I bought an OM-1, had a 12.5" reflector made, and bought a Bill Schaefer mount. Used to cook my film myself.
I am so behind times, it is amazing how technology has taken over. I got into computers when analog to digital was coming into play. Writing software for machines.
I still have all my old equipment. Is there a way to computerize the old Schaefer mount. It has an old drive corrector that works. But, it is ancient.
Been thinking about having the mirror re-coated on the reflector, and playing around with it some.
dcm, those were great links for finding Polaris but I'm still a little uncertain about locating it on my circle in the alignment telescope of the iOptron tracker. I'm also wondering just how critical it is to place, like how long would exposures be where the lack of perfect alignment would show?