First, download the operating system files, either GMS (Google Mobile Services) or Non-GMS from Honeywell’s FTP site. You’ll need to sign up for an account if you are not registered.
Navigate to Software, Computer Devices, Handheld, CK75 CN75 CN75e, Android 6, Current, Device Image, GMS (or Non-GMS). Download the file that has an “sd” in the file name. You’ll need Honeywell’s Download Manager; there’s a link to it on the FTP page.
Unzip the files into a temporary folder. Insert a micro SD card into your PC and format it as FAT32. Copy the entire contents of the unzipped folder onto the root of the SD card. Power down the CK75 and open the back cover above he battery, there are three screws holding it down. Insert the micro SD card into the slot; refer to the manual if you need help with this.
Replace the cover, turn on the CK75 and place it into a powered dock. The files on the SD card will be detected on boot up, a Honeywell logo will display, and after 8 minutes or so an animation appears on screen:
In another 4 minutes the CK75 will reboot to a Honeywell screen. In another 3 to 4 minutes the Android Welcome screen will appear and walk you through the initial set up. When this is done, power off the CK75 and remove the SD card.
Next, navigate to the same folder on Honeywell’s FTP server, but instead of GMS or Non-GMS select the CommonES folder and download the .zip file. This file contains updates to the Honeywell programs on the CK75. Connect the CK75 to your PC (refer to the manual if you don’t know how to do this) and copy the downloaded .zip file (don’t expand it) to IPSM\honeywell\autoinstall folder. You may have to create this last folder yourself.
Go to the main apps page on the CK75 and select AutoInstall. Make sure that AutoInstall is enabled, then click on “Packages upgrade”. You’ll see the various programs being updated. When complete, delete the .zip file from the \IPSM\honeywell\autoinstall folder. The package updater does not clean this up automatically and the upgrade will install on each boot unless you manually delete this file.