Hi @Axay,
If you refer to the User Manual UM2408 and to the Reference Manual RM0455 precisely Section 2.6 Boot configuration you can conclude that the BOOT1 is not available in STM32H7A3.
When your question is answered, please close this topic by choosing Select as Best. This will help other users find that answer faster.
Thank you
Kaouthar
To give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.
