I just updated my Samsung 840 EVO to firmware EXT0BB6Q and was immediately greeted with problems. I did it using magician, which had me disable Rapid mode to flash, and then it began its process and turned off. I turned my PC back on, and it would no longer flash. I did this a couple times to no avail and then I was greeted with a " Previous boot failed do you want to start without quick boot (which I have had enabled in BIOS). I said sure why not, and viola it worked after doing a start-up repair (actually after trying it 2 times with it enabled). So now I'm in magician, and I have the updated firmware number, the new Data security options, and actually much better IOPS (with marginally worse Read/Write). I go to RAPID Mode and there is no disk for me to select in the drop down and enable RAPID mode. Has it been disabled? Or is it always on? Anyone have similar problems? Figured I'd ask you guys, the best forum on the web.