Put your PS Vita into to prevent it from checking Sony's live servers. Connect the Vita to your PC via USB cable. Open the Settings app on your PS Vita. Select System Update > Update via PC .
When the PS Vita cannot update via Wi-Fi, you must perform a manual update using a computer and a USB cable. Prerequisites A PC running Windows or macOS. psp2updat pup download link
The PSP2UPDAT.PUP file is a cornerstone of the PS Vita modding community. While Sony intended it for official updates, the homebrew community has repurposed it for: Put your PS Vita into to prevent it