ami bios change bios rom id help

hello,
i want to flash my bios back.
but in the old rom version is the rom id different.
my request or question.

howto change the board id from 519.rom as the same id ion618.rom
-> id 519.rom same as ion618.rom

thx

  ion519.rom (Size: 2 MB / Downloads: 0)

  ion618.ROM (Size: 2 MB / Downloads: 0)