How to update the firmware of a UniFi controller from 9.4 to 9.5 (via CLI, with backup and snapshot)
🚀 UPDATE YOUR UNIFI CONTROLLER SAFELY
Updating UniFi without planning is the fastest way to lose Wi-Fi and blame "the new version". In this video, I'll show you the step-by-step process to upgrade from 9.4.19 to 9.5 safely, making backups, snapshots, and updating via the terminal, without relying on the "Update" button.
📌 What you will see:
• Validate the controller's static IP address
• Create a checkpoint/snapshot in Hyper-V (same logic for Proxmox/VM)
• Make a full backup (.unf)
• Download the official UniFi 9.5 package via wget
• Install with dpkg -i
• Check the service with systemctl and monitor the log
• Quick post-update checklist
🧪 Scenario used in the video:
• UniFi Network 9.4.19
• Ubuntu Server
• Hosted on Hyper-V
• Manual upgrade to 9.5
🧾 Commands used in the video:
sudo apt update
cd /tmp
wget [INSERT FIRMWARE LINK HERE]
sudo dpkg -i unifi_sysvinit_all.deb
sudo systemctl status unifi
tail -f /usr/lib/unifi/logs/server.log
🧠 Mentoring / Diagnosis / Materials
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