Adrenaline turns your Vita into a full-fledged PlayStation Portable (PSP). It runs the entire PSP architecture natively, meaning perfect compatibility with PSP games and PS1 classics, complete with custom scaling filters and dual-analog stick mapping. Conclusion
The h-encore² exploit and subsequent tools allow for jailbreaking on 3.74. The Jailbreak Process for 3.74: ps vita 3.74 firmware
Modern electronics require secure time-stamping for digital rights management (DRM) and network security. If the Vita's internal method of checking the time failed, the console would lose the ability to sync trophies or access purchased digital content legitimately. By updating the certificates and endpoints, Sony is essentially performing basic maintenance on the servers that allow the Vita to function online. Adrenaline turns your Vita into a full-fledged PlayStation