Download RobustOS firmware and release notes for the M1200. Each firmware link below points to an M1200-compatible package.
For devices managed in RCMS, we recommend using RCMS for firmware updates. Use the downloads below when you need a firmware file for a manual update.
RobustOS 5.3.6
M1200 · Released 8 September 2025
What changed
Upgrading from a version earlier than 5.3.5? RobustOS 5.3.5 introduced a mandatory administrator password change on first login. Plan for this when updating to 5.3.6.
Download firmware · 5.3.6File: m120x-firmware-5.3.6.ruf
Versions are listed from highest to lowest. Choose an earlier release only after checking its compatibility and downgrade requirements.
Downgrading from RobustOS 5.3.x or 5.2.x to 5.0.x or 5.1.x resets Link Manager settings to their defaults. Export your configuration before changing firmware.
| Version / release date | Release notes | Firmware |
|---|---|---|
| 5.3.5 2025-05-30 | View Download PDF | Download |
| 5.3.4 2025-01-24 | View Download PDF | Download |
| 5.3.3 2024-12-16 | View Download PDF | Download |
| 5.3.0 2024-07-03 | View Download PDF | Download |
| 5.2.9 2024-09-19 | View Download PDF | Download |
| 5.2.6 2024-05-27 | View Download PDF | Download |
| 5.2.2 2024-01-31 | View Download PDF | Download |
| 5.2.1 2023-11-06 | View Download PDF | Download |
| 5.2.0 2023-09-28 | View Download PDF | Download |
| 5.1.5 2023-08-03 | View Download PDF | Download |
| 5.1.4 2023-06-15 | View Download PDF | Download |
| 5.1.2 2023-03-22 | View Download PDF | Download |
| 5.1.0 2023-01-13 | View Download PDF | Download |
| 5.0.9 2022-12-28 | View Download PDF | Download |
| 5.0.2 2022-09-13 | View Download PDF | Download |
| 5.0.0 2022-08-10 | View Download PDF | Download |