- bridge - improved system stability when disabling IGMP/MLD querier port (introduced in v6.49beta22);
- poe - fixed PoE out functionality on CRS354 (introduced in v6.49beta22);
- ppp - improved stability when receiving bogus response on modem channel;
- rb3011 - improved system stability when changing RouterBOARD settings (introduced in v6.48);
- upgrade - fixed upgrade procedure on 16MB devices (introduced in v6.49beta22);
- winbox - hide "Allow Roaming" parameter on LTE modems that do not support it;
- bridge - added IGMP and MLD querier monitoring (CLI only);
- bridge - added IGMP snooping log when multicast table gets full;
- bridge - added MAC and IP source addresses information for DHCP snooping log;
- bridge - improved bridge stability when host changes port (introduced in v6.47);
- chr - improved stability when changing "flow-control" settings on interfaces with e1000 drivers;
- conntrack - increased total connection tracking table size based on installed RAM size;
- console - require "write+ftp" permissions for executing script to file;
- console - require "write+ftp" permissions for exporting configuration to file;
- console - require "write+ftp" permissions for printing to file;
- console - updated copyright notice;
- crs3xx - correctly filter packets by L2MTU on 1Gbps Ethernet interfaces for CRS354 devices;
- crs3xx - fixed interface flow control;
- crs3xx - fixed interface LEDs for QSFP+ and SFP+ interfaces on CRS317, CRS309, CRS312, CRS326-24S+2Q+ and CRS354 devices;
- crs3xx - fixed packet transmit in 5Gbps link rate for CRS312 device;
- crs3xx - fixed port-isolation on bonding interfaces for CRS317, CRS309, CRS312, CRS326-24S+2Q+ and CRS354 devices;
- crs3xx - fixed SFP and SFP+ link rate reporting (introduced in v6.48beta11);
- crs3xx - improved 1Gbps Ethernet port group traffic forwarding for CRS354 devices;
- crs3xx - improved LACP linking between CRS3xx series switches;
- crs3xx - improved packet transmit on SFP+ interfaces;
- crs3xx - improved QSFP+ linking and mode changing for CRS326-24S+2Q+ and CRS354 devices;
- crs3xx - improved system stability when receiving large frames on CPU for CRS317, CRS309, CRS312, CRS326-24S+2Q+ and CRS354 devices;
- defconf - fixed minor typo in configuration description;
- defconf - removed overlapping IPv6 firewall rules;
- dhcp - fixed link state checking for DHCP client;
- dhcpv6-server - check if pool name has changed from RADIUS on renew;
- dot1x - fixed MAC authentication fallback (introduced in v6.48);
- dot1x - fixed "reject-vlan-id" for MAC authentication (introduced in v6.48);
- ethernet - fixed cable-test for some devices (e.g. RB2011, RB951G-2HnD);
- ethernet - improved system stability when receiving large VLAN tagged packets on IPQ4018/IPQ4019 devices;
- fastpath - fixed IP packet receive on bridge and bonding interfaces when destination MAC address match with slave port MAC;
- firewall - fixed GRE protocol packets considered invalid when PPTP helper is disabled;
- health - fixed voltage monitor on BaseBox5 devices;
- ike2 - added support for ASN.1 DN "my-id" value setting for initiators;
- ike2 - fixed DH group negotiation with EAP;
- ike2 - fixed EAP MSK length validation (introduced in v6.48);
- ike2 - fixed initial traffic selector's protocol and port in transport mode;
- ipv6 - improved system stability when parsing IPv6 options;
- lora - added additional predefined network servers;
- m33g - removed 12..16 pins from "/system gpio" menu;
- netinstall - fixed lock file persistence after reinstall;
- netinstall - improved bootp packet handling on Linux netinstall-cli version when multiple NIC's are present;
- ntp - use correct IPv6 multicast group for SNTP client;
- package - always allow to uninstall package even if there is no free disk space left;
- poe - do not perform PoE firmware upgrade procedure on RB960 and OmniTik devices without PoE out;
- ppp - do not fail "at-chat" command when issued on disabled PPP interface;
- quickset - prefer 5GHz interface for WiFi scan in CPE mode;
- rb922 - fixed miniPCI-e card detection (introduced in v6.49beta11);
- sfp - added "sfp-rate-select" setting (CLI only);
- sfp - fixed GPON module linking (introduced in v6.47);
- sfp - improved cable length monitoring as defined per SFF-8472 and SFF-8636;
- snmp - fixed SNMP trap agent address;
- supout - fixed "topic" column presence in "Log" section;
- supout - print detailed list of active user sessions;
- switch - improved packet transmit between CPU and 98PX1012 for CCR2004-1G-12S+2XS device;
- switch - improved resource allocation on 98PX1012 switch chip for CCR2004-1G-12S+2XS device;
- swos - fixed "static-ip-address" parameter;
- telnet - do not send options if connecting to non standard port;
- telnet - fixed server when run on non standard port;
- tr069-client - added "X_MIKROTIK_LinkDowns" parameter for interface "link-downs" value reporting;
- upgrade - fixed free space checking on flash type memories when installing new packages;
- upgrade - improved "long-term" upgrade procedure on SMIPS devices;
- user - fixed "skin" configuration for user groups (introduced in v6.48);
- webfig - allow to specify "prefix" parameter under "IPv6/ND/Prefixes" menu;
- webfig - do not corrupt settings when starting "Wireless Sniffer";
- webfig - do not move top right menu in opposite direction when scrolling horizontally;
- webfig - do not show newly created SMB shares as invalid;
- webfig - do not show value units twice;
- webfig - fixed interface sorting by name;
- webfig - fixed new interface addition;
- webfig - fixed new interface addition;
- webfig - fixed "Wireless/CAP" menu opening;
- webfig - show "Interfaces" menu by default after logging in;
- webfig - show "network-mode" for LTE modems that support it;
- webfig - show only "Close" button under "Wireless/Wireless Sniffer/Sniffed Packets" menu;
- winbox - added "Channel" parameter under "System/Console" menu;
- winbox - added "interface-speed-100G" LED type to "System/LEDs" menu;
- winbox - do not show empty "CPU Frequency" parameter under "System/Resources" menu;
- winbox - fixed duplicate "Trusted" setting under "Interface/Bridge/Ports" menu;
- winbox - fixed QCA-8511 switch chip type reporting under "Switch/Settings" menu;
- winbox - fixed "reachable-time" value unit under "IPv6/ND" menu;
- winbox - fixed support for "Delegated-IPv6-Prefix" for PPP services;
- winbox - increased "target" field limit to 128 under "Queues" menu;
- winbox - renamed IP protocol 41 to "ipv6-encap";
- winbox - show "activity" column by default under "IP/Kid Control/Devices" menu;
- winbox - show "LCD" only on boards that have LCD;
- winbox - show "System/Health" only on boards that have health monitoring;
- wireless - fixed minor typo in debug logging messages;
- wireless - renamed "secondary-channel" to "secondary-frequency";
- wireless - updated "united kingdom" regulatory domain information;
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.
Top 4 Download periodically updates information of MikroTik RouterOS X86 Firmware 6.49 RC 27 full driver from the manufacturer, but some information may be slightly out-of-date.
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