From: United Kingdom
The update boot code, from what I read at CDFREAKS, is a flash option, not a backup option.
Essential to enable while flashing an EEPROM-less drive (5238S and late version 52327S) as a side effect is that it prevents overwriting of the calibration area, otherwise uncertain.
Unless you have a reason to use a binary when you flash it, I'd go for the Liteon official SS0E
You could OC it with a Flashfixed 6S0F (52246S), but it's hardly worth messing around for an extra 4x - burn quality at 48x max would be better.