Camera command:
Nina’s Windows laptop was her only tool. Here’s how she used TFTP to save the weekend. Nina first tried to copy the firmware ( cam_v2.1.bin ) using a USB stick. Walking to 15 stores wasn't feasible. She then tried setting up an FTP server on her laptop. The camera’s log read: Error: Protocol not supported. Expected TFTP port 69. tftp on windows
The problem? The cameras were on isolated management VLANs. They had no internet access, no HTTPS servers, and most didn’t even support SMB (Windows file sharing). They only spoke one language for bootstrapping: . Camera command: Nina’s Windows laptop was her only tool
Get-WindowsOptionalFeature -Online -FeatureName "TFTP Client" It was disabled. She enabled it with: Walking to 15 stores wasn't feasible
New-NetFirewallRule -DisplayName "Allow TFTP" -Direction Inbound -Protocol UDP -LocalPort 69 -Action Allow Immediately , the camera’s download began. TFTP uses a dynamic high port for the data connection, but the initial handshake is on port 69. Never forget the firewall. The Outcome By 8:30 PM, all 120 cameras were updated. Nina documented the process for her team: