Have a 3 month old Kodak ESP 2150SE Wireless Office All-In-One printer recently did an update and next time I went to print had lost my wireless connection to router. Have tried everything they tell you to do on the internet and still can't get it back (I an 70 yr old woman, so not the sharpest tack..ha) I had no problem when I bought it and set it up.
Your best bet, since you did it before is to set it up again. Otherwise, since it did not work after an update (windows update?), the driver for the printer was most likely changed, and you would have to go into device manager for the printer and try "Rolling back" the driver to previous one.