The first post-launch firmware update (if you don't count Version 1.50 on day one) for the PlayStation Vita has gone live today, fixing an issue that affected progress in Shin Sangoku Musou (Dynasty Warriors) NEXT. The update to Version 1.510 seemingly does nothing to address the scattered problems some users have been reporting, however, which isn't so surprising considering Sony denied their existence. The best news to come out of this? We were able to update our Vita with the battery around half full — PSP users had to have a full charge to perform firmware installs, even with the system hooked up to AC.

In other Vita download news, the Japanese PlayStation Store has been updated with a couple of new demos. The first is for impressive launch title Uncharted: Golden Abyss, but probably more intriguing is a taster of Sony Japan Studio's upcoming Gravity Daze — known in the west as Gravity Rush. The multidirectional action game is one of the more unusual titles on the Vita horizon and comes out in Japan on February 9th, with a US release pencilled in for sometime soon after the system's February 22nd street date.