Thank you very much.
I was in the wrong folder, now all is fine.
Only in UEFI mode my vga monitor has a signal, in Bios-mode no signal.
I have send back the gen10 because the warranty only valid to november 2018.
It was not possible (perhaps i am stupid) to register the gen10 so that i could download the bios.
The HP support sites are terrible, i will never try it again.
I will buy again, if the bugs are gone and the bios updates are available from others than HP.