Previous versions (1.2.0 – 1.2.4) suffered from false radar detection, causing devices to drop off the 5GHz spectrum unnecessarily. Version 1.255 introduces a recalibrated DFS sensitivity threshold, meaning fewer interruptions if you live near an airport or weather radar station.
Before proceeding with version 1.255, carefully evaluate whether this Lite firmware is appropriate for your deployment:
Open a web browser and input the local IP address of your Ubiquiti device. Log in using your administrator credentials. Locate the management or system settings area: Go to Settings > System > Maintenance.
Read the official "Changelog" on the Ubiquiti Community Forum to check for known bugs or specific upgrade paths (some versions require you to install an intermediate version first). Upgrade Firmware Version 1.255 Ubnt -FREE- Download
section in your UniFi Network Application or Console to check for and apply official updates. Manual SSH Update
Click and select the downloaded version 1.255 file. Click Upload or Upgrade .
Paste the URL of the firmware file or select the downloaded file, then click . Method B: Via Device GUI (For EdgeMax/Legacy Devices) Log in to the device's web interface via IP address. Navigate to the System or Firmware section. Click Upload File and select the .bin file. Confirm the upgrade. Previous versions (1
If performance seems sluggish after the update, perform a factory reset via the UI and re-upload your saved .cfg backup file. To help provide more specific guidance, tell me: What is the exact model name of your Ubiquiti device?
: Avoid clicking on "FREE Download" posts for firmware on social media or unofficial blogs, as these are frequently used to distribute trojans or ransomware targeting network hardware.
The device will download, install, and reboot automatically. If the device won't boot, use the TFTP recovery mode: Software Downloads - Ubiquiti Log in using your administrator credentials
Once the device reinitializes, verify that the operation was successful and that the network routing behavior remains correct. Verification Steps
Always bypass third-party mirrors and acquire your binaries straight from the official source. Step 1: Locating Official Ubiquiti Firmware
Navigate to the or Device Settings tab (commonly found at the bottom left or top right header). Locate the Firmware Update or Upload Firmware section.