.JETKEY File Extension
What is a JETKEY file?
A JETKEY file is a system file used by macOS devices. It contains data used to support iOS apps and devices.
JETKEY files are stored in the Macintosh HD/System/iOSSupport/System/Jet directory. You should not delete or edit your system's JETKEY file.
Common JETKEY Filenames
UUID.jetkey - Each JETKEY file is named using a UUID.
How to open a JETKEY file
JETKEY files are not meant to be opened.