Updated N11 GPS Motor Control Boards from CelestronSome of the first NexStar 11 GPS scopes to reach owners have an older version of motor control board which does not allow the owner to upgrade the firmware and is not compatible with the newer version of hand control (version 4.03 and higher). Read here to determine the version of your motor control firmware. If your motor control is version 3 or higher, you can download firmware and install from your PC as described here. If you determine you have version 1 or 2, you should get a replacement motor control board. Celestron sells the newer motor control board for about $150 (price may change) - contact them via telephone or via the support section of their web site (www.celestron.com). Another option is to contact Andre Paquette regarding upgrades to more recent versions. Andre upgrades version 1 and 2 motor control boards to the newest version and converts the board to allow the owner to perform their own future firmware upgrades. Also, Andre will upgrade older hand controls to version 1.6 or 2.2. The price he charges is very reasonable and much less than the price of a new motor control board. Click here for more information. Which ever route you go, you will need to remove and reinstall the motor control board. Click here for the instructions for removing and reinstalling the motor control board - thanks to Jim Towers for scanning this document. Also, here is a newer version of the instructions that Celestron is currently using - I would recommend reviewing both the older instructions and these newer instructions prior to replacing the board.
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