Go to Sony’s official PS Vita system software page at https://www.playstation.com/en-us/support/hardware/psvita/system-software/ (regional variants such as /en-th/ or /de-de/ also work). on the download link for Version 3.74 and select "Save As…" to download the firmware file. The file will be named PSVUPDAT.PUP .
Go to Sony’s official PS Vita system software page at https://www.playstation.com/en-us/support/hardware/psvita/system-software/ (regional variants such as /en-th/ or /de-de/ also work). on the download link for Version 3.74 and select "Save As…" to download the firmware file. The file will be named PSVUPDAT.PUP .