How to upgrade S-Series VoIP PBX without the Internet?

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  • How to upgrade S-Series VoIP PBX without the Internet?
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There are two ways available:
1. Upload local firmware to S-Series PBX
2. Upgrade through TFTP Server
It is easier to upgrade by uploading local firmware. Please refer to the configuration at https://support.yeastar.com/hc/en-us/articles/115011710888-How-to-Do-Firmware-Update-for-S-Series VoIP PBX-PBX.

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