[Q] Clarification on New JB update please!

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http://forum.xda-developers.com – Hi All, I had a question and was wondering if you guys can help. I have read all of these threads regarding the new JB update but am still not clear on many things. Maybe I'm a bit slow at picking up some of the Acronyms and lingo. My friends and I all have the Nexus 7 and we're debating whether or not to update to the new 4.1.2 JB. The reason we're hesitating is because of the following (Any answers to these questions will be GREATLY appreciated): 1. Nexus 7 has Boot Loader unlocked and rooted with 4.1.1.... Can we do an OTA update? If so, will it lock the Boot Loader and Un-Root? (HowTos)