How to hack the PSVita with FW 3.74

HENlo is a Jailbreak for the PS Vita, compatible with Firmware versions 3.65 to 3.74, initially disclosed by hacker TheFloW. HENlo is deemed more convenient than previous Jailbreaks for the PS Vita because it doesn’t require a computer or a PSN account (things that were both required in previous methods).

There are two implementations of the HENlo Jailbreak: SKGleba‘s one (latest release here) or this one (Project Amber) by Yoti. Which one of these two implementations you use is up to you. They have differences on implementation details, but at the end of the day, both of them let you Jailbreak the console and install HENkaku/Enso (Custom firmware for the PS vita)

Download/ Run project Amber for PS Vita (PS Vita 3.65-3.74 Jailbreak)

PS Vita 1000/1100 with memory card or PS Vita 2000/TV

• Open HENlo host (e.g. http://vitawiki.xyz/henlo) in the Vita browser
• Install HENkaku -> Download VitaShell -> Reset taiHEN config.txt -> Exit

PS Vita 1000/1100 without memory card (but with SD2VITA)

• Prepare SD2VITA on your PC
• Open HENlo host (e.g. http://vitawiki.xyz/henlo) in the Vita browser
• Install HENkaku -> Install SD2VITA as ux0 -> Exit
• Reopen host with your real firmware (e.g. http://vitawiki.xyz/henlo?3.65)
• Install VitaShell -> Exit

Source: Yoti & Wolo.net