Thanks Meter 256
Join Date: Feb 2010
Location: Los Angeles, CA
If you're rooted, you might want to wait and see if it's safe to do it (ie., doesn't break root) unless you're confident on how to get it back. The last update screwed with Recovery and gave some people some slight grief for a short period.
Wiping battery stats has the same influence over battery life as waving a dead chicken over your phone does; none, per Google
If your sig takes up more screen real estate than most of your posts, maybe you should trim it a bit...