Improves stability for some PlayStation Vita titles.
In what has to be one of the dullest updates ever released, the 1.67 firmware for PS Vita is available to download now. Officially it "improves stability for some PlayStation Vita titles".
It follows closely on the heels of the 1.66 update, which itself replaced the quickly pulled 1.65 release.
The update isn't mandatory so won't be a required download to access PlayStation Network.