Are you in the Beta Test program? If not why do you feel the need to risk your device playing with Beta software? Bad things can happen, especially if it is an early Beta.
If your device works as you want and need, there is no need to fix it IMHO.
I think the latest Mac DM release allows OS upgrades, but not sure. I remember reading that some place. Check the Mac section using SEARCH.
You could always set up a windows partition or find a friend with a PC and do it that way.
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