Hello ​@Hamza - you would usually need to upgrade BASE version on the SRA appliance before upgrading the Site Software. Typically, you would do both in the same timeframe - so, upgrade BASE to 7.4.0, then straight away upgrade to 25.1.x.

There are exceptions for downgrading purposes, for instance, Software version PRA 24.3.3 supports both BASE 7.3.0 and 7.4.0 - https://docs.beyondtrust.com/pra/changelog/privileged-remote-access-24-3-3 - this is because you cannot downgrade BASE upgrades, only Site Software (unless offline VM snapshots are used).