A system software update is now available for the PlayStation Portal. Version v5.1.0 of the PS Portal System Software is a minor update that focuses on system performance and stability.
The last major update for the PS Portal was v5.0.0, which built on the Cloud Streaming Beta introduced in System Software v4.0.0.
You can update your PlayStation Portal by going to [Settings] > [System] > [System Software] > [Update System Software].
PlayStation Portal Firmware Version 5.1.0
- We’ve improved system software performance and stability.
- We’ve improved the messages and usability on some screens.
You can check out the PS Portal Firmware history here.
Source: PlayStation Support