Hi, all!
I am successfully upgradeed the BIOS F5 to F6 version.
The Samsung PM981 NVMe SSD has also come in, it works and is fast.
the memory and the cpu update will be tomorrow, I7-7700T, this can be obtained.
the bios update was fast and easy as described.
in the ssd exchange, I used clonezilla usb pendrive and saved the image to nas and then I was back from there.
the whole process took about 1 hour
thanks help and description.