You do not need to visit sketchy third-party sites for these files; they can be obtained legally and for free directly through the emulator's setup process. Open Vita3K on your Android device.
In the emulator's GPU settings, set the backend renderer to Vulkan for significantly better performance on most Android devices. ps vita bios download android
On the PlayStation site, long-press the button and select "Open in new tab" to trigger the download of the PSVUPDAT.PUP file. You do not need to visit sketchy third-party
Once the files are on your phone's storage, you must "install" them into the emulator. In Vita3K, tap . ps vita bios download android