XPR Rev. U firmware upgrade

New XPR firmware for the entire system including boot-loaders is available as of August 24, 2022. This new release includes an important fix that addresses excessive low coolant flow (540) errors, accidentally introduced with the previous revision T. Our team is also decreasing write cycles to the EEPROM memory to preserve memory life and making improvements to increase upload robustness when updating XPR firmware with USB drives. It is important to update your XPR as soon as possible to benefit from the enhancements found in this newest revision. Complete instructions and files are available at https://www.hypertherm.com/support/software/xpr-firmware-updates/.