Ahhh...How embarrassing. Mine is actually 4.4.2 although the rev number in brackets is the same as I previously quoted.(cryhard)(rlaugh)(rlaugh)(spin) The only obvious "improvement" is that Toolbox now doesn't recognise I have an SD card plugged in. I've tried different card readers and /or USB ports and disabling my firewall. Windows reports errors need scanning on the card (although Windows has always reported this ever since I've had the card.). I presume it's call the dealer time as still under warranty. I've always made Toolbox backups when updating the card and cannot access them as Toolbox refuses to recognise the card. Not exactly a cast iron backup strategy by Mazda is it? The funny thing is the car still recognises the card.