On related news, PS Vita developer frostegater, has managed to run a Hello World on OFW 2.00. This Hello World is still running via the PSP Emulator on the PS Vita but shows there are other avenues to exploit the system.
About PS Vita OFW 2.00:
An update to the PS Vita system software was released on 20 November 2012. If you update your PS Vita system, the system software version will be 2.00 and the following features will be updated.
A PS Vita system software update is required to use PlayStation Network features and some features on the system. Also, downloading and installing the PS Vita system software update will update your PS Vita system's operating system to include the latest security patches, as well as new and revised applications, features and settings. It is recommended that you always maintain your system to use the latest version of the system software.
He proves it with a typical Hello world running inside the psp emulator of the Vita. Itís no surprise, as I mentioned before we still have dozens of game exploits available on the psp (and those are compatible with the psp emu on the Vita) Ė lots of which, I need to mention, were found by frostegater himself -, but itís good to confirm that these undisclosed usermode exploits still run even after a release of a new Vita firmware.
For additional info regarding the OFW 2.00 update, check here.