I've attached two zip files which will perform a clean boot on the MC75.  One version resets the application directory while the other leaves the application directory in its current state.  Follow the instructions in the zip file to perform the wipe. You can also download these files from our support site at: http://support.symbol.com/support/search.do?cmd=displayKC&docType=k… 0 17377184 (search for "MC75 Clean Boot" if the URL fails for any reason)