SWM281 Firmware Downloads

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This page contains firmware files for SWM281 devices. Look to the table below or the changelog to find download links.

Stable firmware - this version has been tested through both internal QA processes and large-scale user deployments. All known issues have been resolved based on user reports and testing feedback. Stable firmware is currently used as the default for updates and is also deployed in mass production. To upgrade firmware using WebUI, follow the instructions in SWM281 Firmware.
Latest firmware - this is the most recent firmware release, featuring the latest updates, features, and fixes. While it has passed internal testing, it has not yet undergone widespread deployment or user validation. It may still contain undiscovered issues. We recommend testing on a small number of devices before considering broader updates.

Note: packages for Package Manager are independent from firmware and can be downloaded in the Package Downloads page. For Profinet firmware, use separate packages from Package Downloads (Profinet) page.

SWM281

File	Type	Release date	Size	MD5	Links
SWM2_R_00.01.07.1_WEBUI.bin	Stable FW	2025.09.24	12 MB	f801e91bc48fff0e1709d4462316c04e	Changelog API
SWM2_R_00.01.08.3_WEBUI.bin	Latest FW	2026.03.03	12 MB	cf0872ada54759e1106629ba7197b782	Changelog API
SWM2_R_GPL_00.01.08.3.tar.gz	SDK	2026.03.03	22 MB	43b012b6620b68750a5476e31b68acc4

SWM281 (Profinet)

File	Type	Release date	Size	MD5	Links
SWM2_PROFINET_R_02.01.07.1_WEBUI.bin	Stable FW	2025.09.24	11.5 MB	5b30cdbf89ef7eaec533644603bc0ae3	Changelog
SWM2_PROFINET_R_02.01.08.3_WEBUI.bin	Latest FW	2026.03.03	11.5 MB	bd5cc702f2a2508070e7698e5089ee16	Changelog

FW checksums

Checksums for firmware files can be found here.

Changelog

SWM2_R_00.01.08.3 | 2026.03.03

Fix
- Network
  - Ports Settings: fixed an issue where PoE ports does not get powered

SWM2_R_00.01.08.2 | 2026.02.23

New
- System
  - Site manager: added site manager client functionality

SWM2_R_00.01.08.1 | 2026.02.02

Fix
- Network
  - Ports Settings: fixed applying ports settings
  - VLAN: fixed multicast packets forwarding when a large number of VLANs are configured

SWM2_R_00.01.08 | 2025.12.04

New
- Services
  - Modbus Server: added Modbus server support
- System
  - Certificates: added certificate manager support
Improvements
- Network
  - 802.1X: speed up 802.1x Server when over 50 VLANs are in use
  - 802.1X: updated 802.1x validation so that it can no longer be enabled on a disabled port
  - DHCP server: improved "DHCPv6-Mode" field's option names and hints
  - QOS: added the ability to set a custom rate for selected ports
- Services
  - OPC UA Server: added SFP information
  - OPC UA Server: added STP information
  - OPC UA Server: improved port statistics retrieval performance
  - cURL: updated version to 8.16.0
- System
  - Access Control: added JSON-RPC enable toggle
  - JSON-RPC: moved to Package Manager
  - hostapd: updated version to 2.12
  - Kernel: updated version to 5.10.245
  - libubox: updated version to 2024-03-29
Fix
- Network
  - 802.1X: fixed "auth_enable not found" error in log when upgrading from 1.3
  - Dynamic Routes: fixed services other than EIGRP restarting on network change
  - Loopback detection: fixed memory leak when enabling SFP port
- Services
  - BGP: fixed Access list filters not applying fully
- System
  - IP Block: fixed IPv6 address blocking
  - Overview: fixed value of branch to show "-" instead of "N/A"
  - System Users: fixed multiple network pages working improperly with non-root users
  - Troubleshoot: fixed "Compress" switch hint
  - WebUI: fixed SFP port labeling in WebUI for SWM switches so it matches physical labels
  - WebUI: fixed the “Reset type” hint on the “Reset settings” page
  - WebUI: fixed broken tables on the port status page
  - WebUI: fixed error messages on MRP, Profinet, OPC UA Server, and EtherNet/IP pages when accessed by users with limited permissions
CVE Patches
- CVE-2025-24912 - 3.7 (LOW)
- CVE-2025-46394 - 3.3 (LOW)

SWM2_R_00.01.07.1 | 2025.09.24

Firmware includes no changes for this device

SWM2_R_00.01.07 | 2025.09.15

New
- Network
  - Network: added "Custom DNS servers" field to DHCP interface configuration
  - Ports Settings: added functionality to bounce PoE power and port link
  - Ports Settings: added ability to configure autonegotiation and advertisement options
- Services
  - Event Juggler: added package
- System
  - Update Firmware: added stable firmware support
Improvements
- Network
  - Network: added configurable multicast option
  - Curl: updated version to 8.12.0
- System
  - Overview: added VLAN name to VLAN status
  - Kernel: updated version to 5.10.240
Fix
- Network
  - 802.1X: fixed client configuration reload
  - 802.1X: fixed 802.1X server EAP "SUCCESS" response when authentication fails due to not being able to find the RADIUS requested VLAN
  - DHCP server: fixed incorrect DNS field saving
  - DHCP server: fixed DHCP server startup after reboot
  - Network: fixed VLAN status to show VLAN name and VID instead of internal ID
- Services
  - Profinet: fixed response fragments being sent with differing endianness
  - SNMP: fixed service crash on exit
  - SNMP: fixed 'dot1dTpFdbEntry' OID to show MACs
- System
  - TCP dump: fixed missing "TCP dump" page
  - Update Firmware: fixed WebUI uploaded files disappearing when updating the firwmare
CVE Patches
- CVE-2024-6119

SWM2_R_00.01.06.3 | 2025.07.16

Initial firmware release