Originally Posted by DuckieTigger
5.3.0 does not need to be a typo. The very first version was 5.2.0. The jailbreak for it (here
) by NiLuJe was destroyed with 5.3.0 update, unless you installed the jailbreak bridge. Until ixtab made the new jailbreak, there was a time where you could not jailbreak 5.3.0 unless you went 5.2.0, jailbreak and jailbreak bridge, then let it update.
Sorry, My Bad, I was getting the update numbers confused.
(And I wrote up the firmware <-> model list.)
But I wasn't 100% wrong - if the device updates to 5.3.3 it will not be possible to jailbreak it without reloading 5.3.1 (or earlier).
So the O.P.'s answer is: Jailbreak it **NOW** before any upgrade.