Don't even get me started on why I need to ask this, however, I have a customer who despite all my protesting and explanations why it's an incredibly bad idea, will not replace their 6 year old XP Machines, but instead insist they will upgrade them to Windows 7.
Problem is, quite difficult to find W7 Upgrades, and this leaves me with W8 Upgrades, which they don't want/can't run (their main business app isn't certified and won't be supported), so wondering if I buy W8 Pro Upgrade, can I downgrade to W7? (I presume not but need to check) or is it only
full retail versions which are downgrade able?