PS4 GOD OF WAR - Ragnarok Standard

Ps4 gow Ragnarok can be upgrade to ps5 or not.

Is the upgrade from ps4 to ps5 free in india?

Will ps 4 version be played on ps 5

The cd is internally damaged. when i try to use it on my ps5 i get an error that the cd is damaged or dirty. what should i do?