If you spent the time to do an upgrade using the ISO instead of complaining on here, you would save yourself some time.
They ran into a problem with some RAID arrays (Compaq) not working anymore with 4.016 and have to fix that. I would rather wait knowing it will be done correct then try the Up2date and then find out after a reboot my system doesn't work anymore.
That could just be me though. If you don't have one of these arrays, then why not just do the ISO install and then restore?? Seriously.... I am a paying customer and I do not mind one bit.......