Check the tab and verify that the device's firmware version displays as 1.255 (or your newly updated version).
Confirm the action and monitor the status LED changes on the physical unit. Method B: Advanced Command Line Interface (SSH)
Network stability, security patch compliance, and hardware performance depend directly on running validated firmware. For network administrators managing Ubiquiti (UBNT) infrastructure, upgrading to stable releases is a critical maintenance task.
If you encounter issues during the firmware upgrade process:
Assign a static IP address to your computer network interface card within the default fallback subnet (e.g., set your IP to 192.168.1.99 , Subnet: 255.255.255.0 ).
Ubiquiti Networks, commonly referred to as Ubnt, is a popular brand in the networking industry, known for its high-performance and affordable networking equipment. The company's devices, such as routers, switches, and access points, are widely used by individuals and organizations to build and manage their networks. To ensure optimal performance, security, and features, it's essential to keep your Ubnt devices up-to-date with the latest firmware. In this article, we'll focus on upgrading the firmware version 1.255 Ubnt and provide a step-by-step guide on how to do it.
If your device is isolated from the controller or lacks direct internet access, use the command-line interface to push the update.
Ideal for managing multi-device corporate network campuses simultaneously. Launch your central management application controller. Navigate to the section. Select the specific target device from your topology view. Open the item Settings panel on the right side. Under the Manage sub-menu, click Custom Upgrade .
: Refines system stability and backup restore resiliency to prevent data loss or device crashes.
⚠️ : Firmware v1.255 is very old (circa 2010–2012). Modern Ubiquiti airOS devices run v6.x, v7.x, or v8.x. v1.255 lacks security patches, modern features, and may be incompatible with newer hardware.
Download the official version 1.255 firmware binary file (.bin) from the authorized Ubiquiti download portal to your computer.
Firmware updates are crucial for several reasons:
If using the UniFi Network Application, you can find manual firmware links in the Ubiquiti Community Releases 2. Update via Web Interface (GUI)
Ensure the device details panel reflects the active string as 1.255 .
Ensure your downloaded firmware file is accessible on your computer.