Sorry to bump this, but, Osstis, how did you get your bootloader unlocked? Is it necessary to have it unlocked in order install another firmware via local update? Mine is locked, I checked. I'm running a Chinese firmware (B508) and Google Play Store force closes everytime I open it, I've tried almost everything I could find online to get it fixed but nothing works.
I want to install B512 on my P6, too. I understand that I need to install a B1xx firmware first, but I'm not sure if I need to unlock the bootloader to do it. If anyone can shed some light on this it would be greatly appreciated. I rooted my phone through the one-click methods found online, those software say my phone is rooted but the app Root Checker Basic says its not, how can I be sure?. No custom recovery installed.
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