Hi Vanessa18,
Thank you for using the Support Forum. Youcan still add the printer on macOS using the built-in “Generic Postscript PPD”.
If Xerox driver features are really needed, you could try an unsupported work-around in which you install the Xerox macOS Common Print Driver from a closely related product that is supported on Big Sur. Note that there may be incompatibilities that could cause not all feature/function to work properly.
Please consider contacting your support centre for further assistance.
I have a xerox phaser 3040 and can`t find a driver for big sur. the printer is in perfect condition and I cannot use it. Why Big Sur driver is not available for this device?