Well I tried flashing the drive while hooked up to an older socket 939 motherboard.
It won't flash. This time, instead of not finding a Intel SSD, it tells me my SSD has "Pre - production firmware" and that I should contact Intel.
I also tried using the Intel SSD Toolbox with the hex editor fix. No luck - it says "Error reading drive"
So it looks like you HAVE to flash your Kingston SSD with the iSSDFUT to get the Toolbox to work. You can't just enable TRIM (as I have somehow done) on the 02HA firmware. I figured this would be the case, but thought I'd give it a shot.
Bottom line: I'm "stuck" (LOL) with a Kingston SSD with 02HA firmware but with TRIM enabled. But I can't use the Intel SSD Toolbox.
Oh well. This is kind of like hoping to OC to a certain speed, but only getting stability at 10% less than your target.
If it is indeed the case that the 02HD Firmware MUST be flashed for the SSD toolbox then I will make amends to the guide. However as it is, with this guide we are just looking at TRIM rather than the SSD Toolbox.