right after few struggles i got it.
just for anyone who would happen to deal with things like this.
you have to download image from igel web site as well it comes in zip file. then you have to import this image into web folder created on computer on which UMS is installed.
once is done reboot thin client holding ESC button pressed that present you with screen on which you need to enter information where from your thin client can download the image. as a server specify the computer on which UMS is installed. to logon to thin client as administrator clicki log off then hold left shift and comfirm logoff that will present you with usual windows login: user name : administrator password: administrator
hope it'll helps good luck
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