The WDI4600's Product Reference Guide and Quick Reference Guide can be downloaded here if necessary:

https://support.waspbarcode.com/kb/articles/833
 
You will need to scan either from PDF page 92 on the screen, or from printed page 82.

    Scan "Enter/Exit Programming Mode" at the top of the page.

    Scan "UPC-A Check Character Transmission = Don’t Send".

    Scan "Enter/Exit Programming Mode" again.

    Wait a moment while the scanner resets.