MikeV

Nebula, In addition to what Celestron has posted on their site you can check out the Nexstar Resource Site firmware page http://www.nexstarsite.com/Firmware.htm It should have info on what firmware is available for your scope and some tips on how to do the upgrades. I see you have already purchased it but aside from clean optics I would be mostly concerned about the electronics. Run it through the alignment procedure and see how the motors run, if the GPS gets a fix, etc. Bad electronics that are out of warranty can quickly get very expensive to repair.