Hello @ReeXNeeX,
As you may be about to undertake a revamp of the way you are operating your router (based on your thread at Firewall: Disable all with Exception list - Performance thoughts ) we would recommend you do upgrade.
You have two options:
- 6.3.4 (which is security fix)
- 7.1.0 (which is full of new features, security enhancements and performance improvements)
It all depends on your hardware (model and revision) plus how you plan to manage the equipment.
Also make sure to back up your configuration, noting your admin password(s) before doing any firmware upgrades.
Happy to Help,
Marcus 