ctborg

1. Connect printer, install printer drivers, and enable Printer Sharing.
2. Open terminal, run: dns-sd -Z _ipp._tcp. You'll see a few lines of repeated text. Look for your printer's name, next to that record you will see a TXT, copy everything after TXT into a notepad.
3. In that TXT line, you'll see a line like this: "pdl=application/octet-stream,application/pdf,application/postscript,image/jpeg,image/png,image/pwg-raster" Change that, to add ,image/urf. So it'll look like: "pdl=application/octet-stream,application/pdf,application/postscript,image/jpeg,image/png,image/pwg-raster,image/urf"
4. Now take that entire TXT line, and add it to this: dns-sd -R "name_to_be advertised" _ipp._tcp.,_universal . 631 URF=none pdl=application/pdf,image/urf YOUR_TXT_STRING
5. Run that line in the terminal, and Airprint should be enabled.