Changing UPD values without recalculating the checksum will cause POST failure (typically error code 2 short beeps + 1 long beep on Phoenix BIOS).
Method 1: The Windows Flash Utility (Phlash16 / WinFlash / WinPhlash)
If prompted, select the option to first.
The update rarely adds USB 3.0 boot support. Use a USB 2.0 port for installers.