This firmware is only for versions 2.0 of the Cisco Linksys Cisco Linksys BEFSX41 Router
1. Fixed issue with Access restriction for Mac and IP Address.
2. Fixed VPN subnet not accepting 0 in the last octet.
3. Fixed DNS relay port vulnerability.
4. Fixed some RIP issue.
5. Fixed some GUI issue.
6. Fixed UPnP issue
7. Fixed multicast issue.
8. Modifed support for multiple language(English/French).
9. Fixed QoS issues
10. Fixed Xbox issues
11. Fixed various HNAP issues
12. Fixed DynDNS issues
13. Fixed VPN Netbios not working properly.
14. Fixed remote management for some connection type.
15. Fixed DHCP release time.
Here's other similar drivers that are different versions or releases for different operating systems: