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Paul StewartAug 18, 2025
How to fix Mitel Gateway when it does not load the latest firmware (tftpSendRequest fails)?
- MMark PerezAug 19, 2025
If your Mitel CITELlink Gateway fails to load the latest firmware and displays a 'tftpSendRequest fails' error, the TFTP server IP address might be incorrect. Ensure network connectivity. If you're using DHCP (with internal DHCP), verify that option 128 on the DHCP server points to the 3300 ICP controller (internal TFTP) or an external TFTP server. Also, confirm that the gateway is properly configured: 'autoUpdate' is set to True (default = true), 'dhcpEnabled' is set to True (default = true), and 'configAddress' appears as '0.0.0.0,' indicating the gateway uses DHCP addressing. Remember that a static setting on the gateway will override DHCP options programmed on the 3300 ICP.