The PlayStation Vita is gone, but not forgotten, to Sony, as yet another update has been pushed out for the legacy system. According to initial tests, the firmware doesn't change much at all--it doesn't even patch the Vita's well known h-encore2 exploit, making this new firmware still hackable, though it does seem like the tool used to downgrade your PSV firmware, Modoru has been patched. A new update for the homebrew tool was released, however, bringing Modoru compatibility to 3.73. Since this firmware is still new, you're advised to stay on your current OFW and not update, but at this time, it appears as nothing major has been changed.
Main features in system software update version 3.73
- This system software update improves system performance.