WinFlash is a free utility used to update firmware on some of our pressure/flow calibration systems like PPC4, molbox1+, PG7000, and others. It can be downloaded here:
https://us.flukecal.com/literature/software-downloads/free-utilities/winflash-free-utility
If encounter an error message during installation it is likely due to a known issue with installing the "full" install version. To avoid any errors it will likely be necessary to select the "custom" install version. Make sure the PPC4 USB Driver option is not selected as it is believed to be the cause of the error messages.