What should I do if U2W Plus (Carlinkit 3.0/ 4.0) frequently disconnects?

Issue 1: U2W Plus/CP2A disconnect very often.

Please try the following methods separately:

1. Please upgrade the box to the latest version by following the steps provided in this link:


2. Go to the backend webpage of the box at and change the Wi-Fi band to 149 in the settings.

3. Please access and set the video bitrate to 6 and the frame rate to 0 in the settings.

4. Please access and set the video bitrate to 2 or 4 and the frame rate to 20 in the settings.

5. If you have tried the above solutions but the problem still persists, please try using a cable to add power.

Cable to add power

Issue 2: Carlinkit 3.0 keeps crashing.

The Carlinkit 3.0 starts ok, and then it just becomes laggy and cannot put any inputs in. Eventually, it just crashes and stops, I have to then unplug and re plug, then it works again but finally the same thing happens and crashes again.


1. Please access product backend to modify the Frame rate to 20

2. Please modify the Video Bit Rate to 2 or 4 please try both numbers.


You may refer to the blog below to access


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