Thanks for quick replies.

I do saved my settings and performed update, but can't connect now, after update, see attached image explaining my worries.

1. All was working on 5171 version (performed update myself before), I mean USB, Lan.
2. Web server was behaving strange but iPhone was fine, so I was okay
3. Updated via usb to 603 and no connection via lan/usb. No errors, it just opens dialog about no connection and options to adjust connection settings.

Screen Shot 2013-12-12 at 09.11.03.png