Since 1.30 version add these:
"Improvement of the recording quality with BD-R/RE
Improvement of the recording quality with DVD+RW
Improvement of the recording quality with CD-R/RW "
I would recommend to update the firmware. Of course, you must have a stable system. All drivers, all hardware to work as it should. If you know that you have system problems maybe is not a good idea to flash it since you cannot be sure how the process will evolve. Be sure not to have the system shut down while flashing, and close all other applications. Do not have a disc inside. And I think you won't have any problems.
On the other side, it the flasher refuse to flash that can mean that you may have a defect unit, and it's better to see this know and not later when you will be out of warranty period.