Download the new RouterOS 6.5 release over the torrent network: http://www.mikrotik.com/download/routeros-ALL-6.5.torrent

Otherwise please visit http://www.mikrotik.com/download to pick exact version!

6.5 changelog:

*) tftp - added data packet pipelining for read requests;

*) console - exported physical interface configuration uses 'default-name' instead of item number to match relevant interface;

*) console - report all constituent errors for parameters with multiple alternative value types;

*) certificates - merge '/certificate ca' into '/certificate', use set-ca-passphrase to maintain CA functionality;

*) lcd - backlight option is replaced with "/lcd backlight" command

*) dhcp server - added option to disable conflict-detection;

*) console - ':return' does not trigger 'on-error=' action of ':do' command;

*) route - fixed crash that could be triggered by change in nexthop address resolution;

*) route - some imported VPNv4 routes were not using MPLS labels;

*) route - imported VPNv4 routes were not always updated or removed when the original route changed;

*) winbox - fixed problem where all settings were read only on first open;

*) ovpn server - use only ciphers that are allowed not that client requested;

*) ssh client - fixed public key authentication;

*) ipsec - fix peer mathing with non byte aligned masks;

*) fix routerboot upgrading if RouterOS is partitioned;

*) add support for second serial port on CCR boards;

*) fix serial port baudrate selection on CCR boards;

*) ethernet interface stats that are behind switch chip show real hw stats instead of just the traffic that goes through cpu;

Source