The color temperature of the second generation of Shenniu cannot be adjusted.

1. First of all, there is a problem with the connection between the second-generation light bulb of Shenniu and the app. You need to check whether the connection between the mobile phone and the light bulb is normal, ensure that the mobile phone and the light bulb are in the same WiFi network environment, and try to reconnect the light bulb.

2. Secondly, regarding the firmware update of Shenniu II light bulb, confirm whether there is a firmware update of the light bulb. If there is, you can update the bulb firmware to solve the problem that the color temperature of the second generation bulb of Shenniu cannot be adjusted.

3. Finally, the second generation light bulb of Shenniu was damaged. Confirm that the light bulb is connected normally and the firmware is updated, but the color temperature cannot be adjusted. Then there was something wrong with the second-generation light bulb of Shenniu, and a new light bulb was needed.