[k618i] Problem with SEUS

[GinnCorvus]

Hi!
I've a problem con SEUS... I want update my K618 but i dont complete the procedure...
I open SEUS, download update, reboot seus, select language, chose phone model, next i follow the procedure decripted (hold "C" then plug in usb connector wait few second releas C button), on the screen appear the detecting bar.... all ok... but next appear this screen (see below in attachement):

Update available but no button to click!! No other action i can do!!
Why?