MikroTik RouterOS MMIPS Firmware 6.40.4 Download

Posted at April 20, 2024 by PCI-DB Team

MikroTik RouterOS MMIPS Firmware 6.40.4 Description

What's new in 6.40.4:

- address - show warning on IPv6 address when acquire from pool has failed;
- arp - fixed invalid static ARP entries after reboot on interfaces without IP address;
- crs1xx/2xx - fixed 1 Gbps forced mode for several SFP modules;
- crs317 - added L2MTU support;
- crs3xx - improved packet processing in slowpath;
- defconf - fixed RouterOS default configuration (introduced in v6.40.3);
- dhcp - fixed downgrade from RouterOS v6.41 or higher;
- dhcpv6 client - added IAID check in reply;
- dhcpv6-client - fixed IA check on solicit when "rapid-commit" is enabled;
- dhcpv6-client - ignore unknown IA;
- dhcpv6-client - require pool name to be unique;
- e-mail - auto complete file name on "file" parameter (introduced in v6.40);
- export - fixed wireless "ssid" and "supplicant-identity" compact export;
- hotspot - fixed missing "/ip hotspot server profile" if invalid "dns-name" was specified;
- hotspot - improved user statistics collection process;
- ike1 - remove PH1 and PH2 when "mode-config" exchange fails;
- ipsec - kill PH1 on "mode-config" address failure;
- ipv6 - fixed IPv6 address request from pool;
- lte - fixed modem initialization after reboot;
- ntp-client - properly start NTP client after reboot if manual server IP is not configured;
- rb931-2nd - fixed startup problems (requires additional reboot after upgrade);
- routerboard - fixed "/system routerboard upgrade" for CRS212-8G-4S;
- sfp - fixed OPTON module DDM information readings;
- sfp - fixed temperature readings for various SFP modules;
- snmp - fixed "/caps-man registration-table" uptime values;
- snmp - fixed "/system license" parameters for CHR;
- tile - improved reliability on MPLS package processing;
- userman - fixed unresponsive RADIUS server (introduced in v6.40.3);
- vlan - do not allow VLAN MTU to be higher than L2MTU;
- webfig - improved reliability of login process;
- wireless - added "etsi1" regulatory domain information;
- wireless - improved WPA2 key exchange reliability;
- wireless - updated "norway" regulatory domain information;

About Router Firmware:

Before you consider downloading this firmware, go to the system information page of the router and make sure that the currently installed version isn't either newer or matching this release.

Due to the large variety of router models and different methods for upgrading the device, it is highly recommended that you read and, above all, understand the installation steps before you apply the new firmware, even if you are a power user.

In theory, these steps shouldn't be much of a hassle for anyone, because manufacturers try to make them as easy as possible, even if they don't always succeed. Basically, you must upload the new firmware to the router through its administration page and allow it to upgrade.

If you install a new version, you can expect increased security levels, different vulnerability issues to be resolved, improved overall performance and transfer speeds, enhanced compatibility with other devices, added support for newly developed technologies, as well as several other changes.

If you're looking for certain safety measures, remember that it would be best if you perform the upload using an Ethernet cable rather than a wireless connection, which can be interrupted easily. Also, make sure you don't power off the router or use its buttons during the installation, if you wish avoid any malfunctions.

If this firmware meets your current needs, get the desired version and apply it to your router unit; if not, check with our website as often as possible so that you don't miss the update that will improve your device.

  It is highly recommended to always use the most recent driver version available.

Try to set a system restore point before installing a device driver. This will help if you installed an incorrect or mismatched driver. Problems can arise when your hardware device is too old or not supported any longer.

Related MikroTik Drivers