How to add NVMe to Intel® Workstation Board W2600CR BIOS ? (AMI) Flash erros

I try to use UEFI tools to modified the bios but cannot flash to mainboard.
Does anyone have idea?

Thank you a lot

For Intel boards you usually cannot modify BIOS like that and reflash, you need flash programmer (CH341A) and possibly a SOIC8 test clip cable. Show me some good images of your motherboard and I can find BIOS and tell you if you need the cable or not.

Normal procedure to modify Intel BIOS is to use flash programmer to get a verified BIOS backup, copy that and save a copy somewhere safe, the modify the backup and reflash to the board.

Done and fix by myself

Did you use programmer? If not, how did you end up flashing? Thanks!