Hello, my name is Pavel, and I will be supporting your case, maybe your MCU cannot be halted by the debugger, try this thread maybe can help you.
RT board recovery for debugger connect issues - NXP Community
If the issue persists, I recommend reinstalling the firmware just to discard it.
OpenSDA Serial and Debug Adapter | NXP Semiconductors
Best regards,
Pavel
Hello, my name is Pavel, and I will be supporting your case, maybe your MCU cannot be halted by the debugger, try this thread maybe can help you.
RT board recovery for debugger connect issues - NXP Community
If the issue persists, I recommend reinstalling the firmware just to discard it.
OpenSDA Serial and Debug Adapter | NXP Semiconductors
Best regards,
Pavel