Hi IamGimli,
Thank you for contacting Intel.
Base on your test, it appears your network card does not have flash. Make sure that you have an Intel Retail Adapter to be sure that your adapter has the flash memory. Try to find a bar code sticker and you should see a 6-3 digit number. This is the adapter's board number.
The board number of Intel® Ethernet Server Adapter I350-T4 is G15139-xxx. If you have other board numbers, please provide your board# here.
Sincerely,
Sandy