Random Native Port; Remote Upgrade - Ebyte NB114 User Manual

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Chengdu Ebyte Electronic Technology Co., Ltd.

4.6.5.Random native port

TCP client, UDP client, HTTP client and MQTT client can configure the local port to 0

(use random local port). The server mode cannot use random port, otherwise the client

cannot establish a connection correctly.

Using random port connection can quickly re-establish the connection when the device

accidentally disconnects the server, to prevent the server from refusing the connection due

to four incomplete waves. It is recommended to use random port in client mode.

The device will automatically enable random ports when configuring TCP client, HTTP

client and MQTT client modes.

In order to facilitate later maintenance and upgrade functions and replace different

firmware, serial servers (NA11x series, NB114, NS1, NT1, etc.) support online upgrade.

Users can upgrade or replace the current firmware through the upper computer through the

upgrade firmware provided by our company.

Network upgrade firmware operation steps:

Step 1: download the upper computer and "product firmware" at the corresponding

location on the official website;

Step 2: Open the upper computer, click "Menu", and select "Device Upgrade Assistant";

NB114 User Manual

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