I came across this question and was going to post an answer to help them root their phone since I recently did a similar phone, but it says it's protected. OK, I get that but what I don't is that it says you need 10 rep to post an answer. My reputation is sufficient for this, why can't I post an answer? It makes no sense to me so can anyone explain?
The +100 rep association bonus is not counted in the protection algorithm. The post notice states (emphasis added):
To answer it, you must have earned at least 10 reputation on this site.
and the "on this site" part is actually quite literal, though not entirely clear. Therefore, looking at your rep history, you've got +100 for the association bonus and +5 for an upvote on one of your questions. That nets you 5 rep from your activities on this site, which is still shy of the 10 needed.
There is also a more detailed explanation of the "protected" status on Meta Stack Exchange, for reference.
In this specific case, the view count of the question is pretty low, so I'm going to remove the protection. It looks like it was applied because it picked up a bunch of non-answers within the first 24 hours, but then the views petered off after that.