"Don't update your 2012 Nexus 7 to Jelly Bean 4.3."2.0 starson by dennis0844
Pros: I haven't found any yet.
Cons: The gyro doesn't work, its suck in the landscape mode. I use my Nexus 7 more often in the portrait mode reading. Jerky scrolling on some internet pages.
Summary: Don't update your 2012 Nexus 7 to Android Jelly Bean 4.3. I just did and regret it. I haven't found a way to go back to 4.2.x. The positive reviews of 4.3 must apply only to the new Nexus 7 2 model. The Nexus 7 almost replaced my desk/laptop PC's. Now I'm back on them. Jelly Bean 4.2.x worked well for me, I'd like it back. I'll have wait for version 4.3.X ?A couple weeks after updating to Jelly Bean 4.3 it's now working as good as ever. The portrait view is working well.
Updated on Aug 20, 2013
The sluggish scrolling is gone. My 2012 Nexus 7 is working as good ever. I now rate it ****.