Sometimes Wi-Fi transfer corrupts the file. Use QCMA with USB.
When the PS Vita rejects this update file or displays an error, it is usually due to one of the following reasons: psp2updatpup fixed
The psp2updat.pup file is the data package the PS Vita uses to install or re-install its operating system. Errors usually occur due to interrupted firmware updates, corrupted memory cards, or conflicts between custom firmware (like HENkaku/Enso) and official Sony servers. When the Vita cannot read this file correctly, it halts system operations to prevent a total brick. Method 1: The Safe Mode Fix (Most Reliable) Sometimes Wi-Fi transfer corrupts the file