Plug an Ethernet cable from your router directly into the printer’s rear port. The printer will automatically detect the wired connection and disable Wi-Fi. No password needed. The link light on the router port should flash green.
Alternatively, you can reset just the network defaults by selecting > Network Settings . Resetting Ink Pad Counter (E11 Error) how to reset epson l4260 printer link
After the hard reset, your L4260 is in the same state as when it first came out of the box. Plug an Ethernet cable from your router directly