The download package usually arrives as a compressed .zip or .tar.gz archive. Right-click the file and select to unpack the contents into a dedicated folder. Step 2: Review the Release Notes

Run the executable file ( setup.exe ) and follow the on-screen instructions.

To obtain the verified, clean software or firmware for your CSF2100D unit, follow this structured procurement process: Step 1: Identify the Original Equipment Manufacturer (OEM)

After cross-referencing across forums (Reddit r/POS, StackOverflow, and OEM databases), the as of this writing is hosted on the CITAL (Xiamen) Tech support archive:

Never turn off the host computer or disconnect the CSF2100D device while a firmware flash is in progress.