Archive of firmware?

Is there an archive of old firmware? I’d like to revert my Taz5 temporarily back to its factory state.

~ Will

The earliest .hex version of firmware I could find for the Taz 5 is located below:
http://download.lulzbot.com/TAZ/5.0/software/2016Q2/Marlin/

Be aware that the older versions of firmware are likely not 100% compatible with newer versions of Cura