Hi, I got a GNexus 3 days ago, and I've been fiddling around with android. And when I went to some forums I was blown away by the amount of builds, terms and update regulations, so I have some questions: 1. My build is a yakjuxw, should I change to yakju? Does it void warranty? 2. How do updates work? I've seen lots of people installing it manually, but should I wait for the OTA? Will it take long? Would it be dangerous if I tried to update it manually? 3. My phone is 4.1.1, but there already is 4.1.2 and 4.2, and my phone says it's up-to-date, what's wrong? Will I have to wait long? 4. What is GSM and HSPA+? 5. Should I just lay back and wait for everything to solve itself?