Mk 4 Firmware

Download

Download Release 4.05h for the Mk 4 CS TimeClock
USB Firmware Update Instructions (text file)

Important:  Please backup your clock database before doing a firmware update!

Version History

 

Version 4.05h - 3 November 2026
 
  • The web interface now runs on PHP 8.2.35 instead of PHP 5.6.
  • PHP Update is only installed on clocks running Debian 9 or later. Older clocks are skipped and stay on PHP 5.
  • Update applies to web, memory-stick and /var/tmp updates.
  • Web fixes to support PHP 8.2.