Chances are the IP addresses changed as a result of the update.
Reinstall the wireless printer and confirm the IP address that it should be assigned to. Once you get the right IP entered you should be good to go. While you are at it I highly recommend setting up a static IP address for your network connected printer. This will reduce the risk of a misconfiguration issue on future firmware updates or reboots.
Our goal is to help you in the best way possible, Linkommer. Can you please elaborate further? Have you been able to print from you iPhone before?