Hi @db_1017 ,
1.. "System services have not been validated with this version of GCC"
- It is not critical, and you may just ignore it or update the source file as below:
and from my side, I just see two warnings, and my IDE is MCUXpresso IDE v11.3.0 [Build 5222] [2021-01-11], is it the same with you?

Basically they are not critical either. The demos are validated before release.
Have a great day,
Kan
-------------------------------------------------------------------------------
Note:
- If this post answers your question, please click the "Mark Correct" button. Thank you!
- We are following threads for 7 weeks after the last post, later replies are ignored
Please open a new thread and refer to the closed one, if you have a related question at a later point in time.
-------------------------------------------------------------------------------