HLDS GCC-4120B CD-RW/DVD combo drive firmware update
This firmware update will improve DVD reading and general reading speed. It also fixes some minor issues when writing CDs.
This firmware update should only be used on the GCC-4120B Combo drive when it has 2 LEDs on the front, one for "Read" and one for "Write".
If your GCC-4120B has only one LED on the front, this firmware should NOT be used!