The discovery of the "Psp2updat.pup" file's significance and the creation of Henkaku and VitaShell marked a significant moment in the PS Vita's hacking community. These tools allowed users to run homebrew applications, including emulators, games, and utilities, on their PS Vita consoles.
In 2016, a hacker named @yournashi released a PS Vita exploit called Henkaku, which allowed users to jailbreak their PS Vita consoles. This exploit used a specially crafted "Psp2updat.pup" file to gain access to the PS Vita's firmware.
The PS Vita used a similar update mechanism, but with a different file format. However, some clever developers discovered that the PS Vita's firmware contained references to the PSP's firmware update process, including the "Psp2updat.pup" file.