Why is the function display of different product firmware upgrades different under the same IoT account?

Because for the different kinds of products, the distinctions are made for the firmware upgrades as follows: 1. The SOC products do not display the firmware upgrades. 2. Customized firmware products do not display the firmware upgrades. 3. MCU+ general firmware products can only display the MCU firmware uploaded by customers, and will not display the general firmware version bound with the background.