If you need a specific older firmware version (such as or 3.65 ) for compatibility with custom firmware like HENkaku, you must source them from community-maintained archives. HENkaku Archives - Wololo.net - Rssing.com
If you want, I can:
Custom Firmware 3.65 HENkaku Ensō Updater for PS Vita · GitHub psp2updatpup download link
With the official channels no longer available, users began searching for alternative sources to download PSP2UPDAT.PUP. This led to the rise of unofficial websites, forums, and file-sharing platforms hosting the update file. While these sources may seem convenient, they pose significant risks: If you need a specific older firmware version (such as or 3
: Enthusiasts who use tools like HENkaku often require specific versions of the .PUP file to downgrade or "cross-grade" their firmware to a more hack-friendly version, such as 3.60 or 3.65. While these sources may seem convenient, they pose