info text from cgxx readme:
Code Guys CGxx Firmware
CGxx stands for:
CG Code Guys firmware
x1 Code Guys version number (0..9, A..Z)
x2 Base version number (B for VS0B, E for VS0E, etc.)
Versions marked with "sonyid" have the drive name changed to match that of the Sony DRU-700A and are not based on the Sony VYxx firmwares. Aside from the difference in the drive name, the "sonyid" versions are identical to the regular versions. These "sonyid" versions can be useful if you have locked OEM software that will work only if your drive bears the Sony name.
This firmware has been design to improve the quality of burns when using +R, -R, +RW and -RW media. It uses a stepped recalibrate that stops the burn periodically to recalibrate, which means shorter periods where the drive has to maintain the correct optical power control. This same technique can be seen in the NEC 3500AG. Results now show that this firmware can produce results equal to and sometimes better than the NEC 3500AG.
This firmware will not be the fastest firmware for your drive. You have to decide whether you want speed or quality. In saying that this firmware can burn 8x media almost a minute faster than the NEC 3500AG.
This firmware is not designed to allow you to overclock you media past the manufactures rating. In fact it requires you to use your media at the limits imposed by this firmware. Changing the write speeds of media in this firmware will seriously limit the firmwares capabilities to improve quality. However should you decide to overclock media anyway, this firmware will still perform better than VSxx firmware.
The drive's light will blink orange more often during the burn and some additional PIF spikes are inevitable on some drives, due to the relinking after the recalibrate.
The +R recalibrate stops at 3GB on 8x burns to avoid read errors on some drives that don't relink well past this point. -R appear to link better than +R so it will continue to recalibrate to the end of the burn.
Stock firmware media changes:
RICOHJPNR01 changed from 4x to 8x
for more information ask c0deking.