Here is an interesting look at what this file is, why people search for "patched" versions, and the cat-and-mouse game behind it.
This is the standard method for "updating" to a specific lower firmware: Step 1: Set up the Update Folder On your PC, create a folder named PSV Updates . Place your PSVUPDAT.PUP and the corresponding psp2-updatelist.xml file inside. Step 2: Configure QCMA psvupdatpup download patched