Thank you! I've find the answer on the related topic already (finally I was able to do it after two days of searching). The procedure was the same as you described, so it does work in this case.
Thank you again and good luck:)

1. Power off the printer
2. Open the front cover
3. Press and HOLD both the Cancel and Continue buttons
4. Continue to hold the buttons and power the printer on.
5. Continue to hold the buttons until all light cycling activity has stopped.
6. After the lights have stopped cycling (could take up to 30 seconds), release the buttons.
7. Close the front cover to complete the Factory Default reset process.

If you're attached to a DHCP source, the printer should then request and acquire an IP address. Hope this helps.