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STM32F746G Discovery: What is the difference between CU3 and CU4 in the end?

VSabn.1
Associate II

Hi,

I have a STM32F746G Discovery board on which I have developed an application. The application was running fine on STM32F746G Discovery CU3.

 

When I bought a new identical board and flashed the application, the display literally showed something  like this:

WhatsApp Image 2024-11-18 at 16.21.15.jpeg

 

 My old board is DK32F746G$U3, which is working fine, but the new one is DK32F746G$CU4, which shows Black screen. 
I have no clue what the display is used for CU4 as I could not find any information about it. 

How do I solve this? 

11 REPLIES 11

I fixed it!

How?