Amazon sent a message to my K3 a week or two ago, titled "Your Kindle is Updated." The message detailed a list of changes. The version is now 3.4 (1725970040).
I applied the jailbreak and screensaver hack to whatever the previous version was.
Question: do I need to do anything? uninstall the old hack & jailbreak? re-install it over the changes? I've been afraid to allow a full re-start of my Kindle, not knowing if I'd get a brick. (Total tech ignoramus here, obviously.)