SSD Drive (second one...) still only booting every now and then

[Skyline]

Many months later and the boot failing issue has finally driven me mad!

I thought I'd attempt to update the firmware on this wretched VERTEX3 myself and downloaded the OCZ Toolbox and notes. Big problem. The notes say:
"These tools are specifically designed for the SATA controller to be in AHCI mode. Systems that do not have AHCI mode may experience errors with updating the firmware." I don't know what all that means but I believe my SATA is in RAID mode.

Now what do I do?

[KeyboardDemon]

Did you not go down the route of sending back your SSD and getting Scan to clone it to a new drive for you? This is what you were discussing with Ben back in 2012.