Sony released PS Vita system software 3.74 as the latest official update for PS Vita and PS TV systems. This post explains what changed in 3.74, who should install it, how to download the official update, and step‑by‑step installation methods (Wi‑Fi, PC, PS3, and USB), plus tips, risks, and troubleshooting.
The 3.74 update significantly altered how users interact with Sony's online services on the Vita: PSN Security: ps vita firmware 374 download new
No. Stick with 3.60 or 3.65. There is zero advantage to 3.74 for homebrew, and several disadvantages. Only update if a specific game demands a higher firmware – and even then, use ref00d or 0syscall6 plugins to spoof it instead of updating. Sony released PS Vita system software 3
Put the PSP2UPDAT.PUP in PS Vita -> SYSTEM_UPDATE -> PSP2UPDAT.PUP on your PC, then use QCMA to update. Stick with 3