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So I am going to reset my first gen surface so I can clear up some much needed storage. It usually always reverts back to 8.1
I've been using 10 the last year. Will I be able to reupgrade back to 10 without issue?
by reset, which reset are you doing? There are 3 kinds of resets available in windows 10 - try the one where data stays but apps and software get cleared - that shouldn't take you back to 8.1
Even if it did, you can still get W10 as your device is now recognised for the w10 upgrade