Look I get that parallels relied on x86 design to run its stuff, but with all the CPU power of an M1, you can't tell me there isn't a way to emulate? There are tons of emulators out there that allow non-matching CPU architecture to run another system/os.. Maybe windows 7 and Window 10 would be a bit more demanding but I can't believe I bought this upgrade without some serious warning.. the sole reason a bought this was to continue to use the same images i've been using up till now... Even if it runs slower. it would at least work..