Note that it says that the faster speeds apply to R and RW media only. Single-layer pressed media will always be 16x. The hack affects only recordable/rewritable reading speeds. This is the extent of hacking that is done for DVD-ROM drives--increasing reading speed (because there really isn't much more that can be hacked...).
The Sony drive you mentioned is a CD-recorder. There does not exist any hacked firmwares for CD-recorders (because there is nothing to hack... speeds are already at their physical limits, there are no limitations of the drive to remove, etc.).