How to Upgrade Hand Control Firmware - NexStar+ and StarSense
To update the hand control firmware, you will need the Celestron Firmware Manager (referred to as CFM for the rest of this document) from Celestron's web site:
CFM uses Java (download the latest from www.java.com) to work on Windows, macOS and Linux.
Updating your scope also requires a connection between the port on the bottom of the hand control and your PC or laptop.
The current NexStar+ and StarSense hand controls (all those manufactured since April 2016) have a USB port on the bottom for connections to a PC/laptop. This port is actually a connection to a USB to serial adapter inside the hand control. For details on the cable required, read this. You must connect this cable between a USB port on your computer and the port on the bottom of the hand control. You will also need to load a driver, read this for more information.
NexStar+ and StarSense hand controls manufactured prior to April 2016 have an RS-232 port (looks like a phone jack). You will need the Hand Control RS-232 Port Cable that plugs into the bottom of the hand control. For details on the cable and sources to purchase one, read this. You must connect this cable between a serial port on your computer and the port on the bottom of the hand control. If your PC does not have a serial port, you will need a USB-to-serial adapter available at most computer stores. See PC Control on this website for more information and options regarding computers without a serial port.
After downloading CFM, you must then "unzip" or "extract" it to a folder on your computer. Don't lose track of the location of this folder as you will need to navigate to it to start CFM later.
Additional Notes - Hand Control Menu Items