: Some regions still host the firmware 3.73 PUP files on official PlayStation servers, though links are often redirected to 3.74.

: Download the Content Manager Assistant on your computer, connect your Vita via USB, and select Update by Connecting to a PC . 2. Manual Update to 3.73 (via PC)

Create a folder named PSVITA on a USB drive, and a subfolder named UPDATE inside it.