Just as when we thought the 1.66 firmware that Sony released on the Vita last week is the last one to download on the Vita, another firmware is now available for download.
There’s currently no information as to what 1.67 firmware does but it most likely be a patch to increase the security of the Vita’s OS. Just like the previous two firmware that they’ve released, make sure that you have at least 97MB of space in your memory card.