Method for updating EEPROM in a 10 GbE Controller 82599

Hi !

I use a 10 GbE Controller 82599EN. I need to update an EEPROM which is programed via ROM Writer.

I try to update by using ethtool.

Type as below:

ethtool -E eth2 magic 0x10FB0860 offset 0x0 length 0x1 value 0x07

Result as below:

Cannot set EEPROM data:Invalid argument.

Would you tell me what are invalid arguments ?

Or Would you tell another method for updating an external EEPROM ?

BR,

Taira