Answering first your last question, I don't think so. I even don't know where it is set the OS country variation is... Anyway, if you install the ISO of the 10547 build from your actual Windows...

Well I solved the question using an ISO of last build that I download from an insecure source, but with no problems... See the solution here:...

Done that, no changes... Still don't see any Insider Preview Builds. Also made an edit to Registry where I changed the value of RecoveredFrom to "" and same result, no Preview Builds

Really don't now, but I think so... But I can give it a try again...

Charlie,

During the Technical Preview I've used in the beggining that way, since there wasn't Portuguese as display language but as the TP evolved I started using it in Portuguese. When I did the...

Thank you Charlie,

Yes, I've done that change about two weeks ago... I'm on Fast Ring since then and I was already before...

I'm a Insider member since Oct 2014, get all the builds till the official launch of Windows 10 last July.

A few days before the official launch my Windows 10 TP (build 10240) had a boot problem...