Setup application (
hp-setup) in package
hplip fails miserably, after
specifying network settings (SSID, WPA key) printer cannot connect network.
Troubleshooting & printing the configuration (press Cancel button on the
printer), found out that WPA-PSK didn’t get saved on the printer.
Resolution: Install printer w/
hp-setup, but connect it to OPEN WiFi
network. After that, you can connect to printer via HTTP, and configure
wireless network again. Win.