Following yesterday's announcement, publishing, and subsequent removal of PlayStation Vita firmware version 1.65, Sony has made version 1.66 available for download. The 97MB update presumably fixes the issue with adhoc wireless multiplayer on PSP games that caused v1.65 to be pulled in the first place, along with the assortment of usability tweaks that it was originally intended to bring. It's good to see Sony respond quickly to the issue, but this isn't the first time the company's pulled the trigger too early on Vita software — in February, the Facebook app was taken down after users complained of login issues. Hopefully the company tests its updates more thoroughly in future.