How to set static IP for ICX 7150 C-12P switch through web interface

Hi there.  I went through the steps in the quick set up guide to add a password and enable the web interface using Putty and telnet as I do not possess the necessary console lead.  All was well and I got the web interface up and running with my chosen username and password.  Unfortunately I closed the script box before adding a static IP as I assumed this could be done on the web-interface.  However, it doesn’t seem possible to add the static IP on the web interface and now putty won’t connect me, presumably because I have added a username and password.  To get a console lead is a mail order and a 2 week wait as I live overseas.  Is there another fix?  The online manual isn’t helpful as it seems to be for a router not this switch and there is different functionality for adding a static IP address.Or is this just putty being unreliable?Many thanks.