So what, you ask, is the difference between Kindle software Release 1.04 and 1.08? Apparently, less that you’d think. According to the Kindle Help page, “There is no difference between these software versions.” Go figure.
There is, however, apparently a difference between these two (er, one) versions and Release 1.0. Kindle users report that battery life management improved when they upgraded from 1.0 to 1.04 (or to 1.08 for that matter).
What release is your Kindle running? Go to “home,” scroll to “settings” and click. At the very bottom of the settings screen you will see the version of the Kindle software you are running. If it is 1.0, go here to figure out how to upgrade to 1.04 (or 1.08, for that matter).