So basically the trouble people were having with the plextor premium and safedisc that was put down to TLA (not sure if this was ever confirmed) could have been fixed by updating\changing the TLA Or is this not possible
The TLA is not something you can change. The first two number of the TLA for example (TLA01--) represent the hardware revision. Plextor changes the hardware revision whenever it changes a part in the drive's manufacturing process. The current hardware revision for the PX-716A is TLA02 (representing the second hardware revision)
The last two digits of the TLA ex: (TLA--02) represent the firmware revision. Firmware is something that you can change by downloading firmware updates from the Plextor website. Current Plextor PX-716 drives are shipping with firmware revision 2.
So when you look at the box, it states TLA0202 (meaning hardware revision 2, firmware revision 2). You can change the firmware, but only Plextor can change the TLA#, make sense?