Intel BootUtil no longer understands gPXE/iPXE images?

[robinsmidsrod]

Most likely the ROM is too large (not sure what the limit is for intel, but 64KB is a common limit), or it is not aligned to some boundary. The src/util/padimg.pl script in the main git repo can help you to get an aligned ROM image by padding NUL bytes. Have a look at the original ROM and see if you can make the new (ipxe) ROM exactly the same size (by starting smaller and padding as required).

Please report back your findings so that we can update the intel romburning page on the wiki with some new info. Version numbers and such of tools and vendor PXE ROMs are quite useful.

I assume that you have no problem to flash an official ROM from Intel on your card?