Philips 4801

I’m having trouble with the Flashtool … it detects the drive in the list, but when it goes to the firmware list… I have to select the folder–it says one .cvt in the folder… then I click ok … then it wont show the .cvt (firmware) in the list… I don’t get it… Is it my drive–or the firmware/flashtool? Anyone else had this problem?
BTW—I’m using Flashtool V3.7.2.1