I may had interrupted the first OTA while it got stuck in purple, since I tought a problem was happening.
I never actually used a Photon, and it behaves differently from a Core. Sorry for that.
Well, the "particle update" did the trick. Now its 0.6.2. The SIGNAL started to work too.
So I decided to make an OTA, but it started to flash green.
Then I enabled system threads, and looks like its done.