I have quite a problem with my n9006 I bought in China a few months ago.
I successfully rooted it a month ago, then I managed to install Gapps. But it only worked a few days before it got messed up.
I cannot sign in with my google account, so every Gapps are useless. Also I didn't backup my apps with Titanium before I got rid of some of native apps, so I have freezes and crashes.
What should I do? Can I install an official update, a custom rom? If I install an official rom, will I lose my root?