STM32H753I-EVAL2 - Using Ux_Device_Audio2.0_Playback does not work

[audio]

I have STM32H753I-EVAL2 board and I want to set it up as an USB Speaker device. 

I see 3 protect that can make this as such, which are:

Name	Board	Board Type	STM32CubeMX Version	SW Package Installed
Ux_Device_Audio_2.0	STM32N6570-DK	Nucleo-64	NA	TRUE
Ux_Device_Audio_2.0_Standalone	STM32N6570-DK	Nucleo-64	NA	TRUE
Ux_Device_Audio2.0_PlayBack	STM32H743I-EVAL	Nucleo-64	6.15.0	TRUE

Two things...

1) I don't want RTOS, but STM32H743I-EVAL has RTOS, and the one I'm looking for is on the wrong board. So... What advantage do I have using RTOS? Can I use the Standalone one and change the board somehow in the code? I haven't done much comparison to know, I've been overwhelmed trying to understand the organization of the project. 

2) When I do download, install and run the Ux_Device_Audio2.0_PlayBack anyway, the program is running. I see the USB being enumerated as a speaker on my laptop. Issue is, everything is fine, but when I try to play an audio, it runs into a fault -- > `void HardFault_Handler(void))`

I can't tell where it's being called, but the stack is as such:

Any idea why I can't play audio out?

[AScha.3]

1 >  no, you can use an RTOS or not....as on any other cpu .

2 > 0xFFFFF ...maybe using a not initialized pointer, or calling a non existent function...?

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I quickly searched in the community forum what do I do for HardFault_Handler(). Saw someone mention Fault Analyzer, and it shows:

Hard Fault Details: Bus, memory management or usage fault (FORCED)

Bus Fault Details: Imprecise data access violation (IMPRECISERR)

I'm new to this technology and I did not add or modify anything in the example code. Not sure what to do next, but I'll keep searching on.

[audio]

I am now reading this: https://community.st.com/t5/stm32-mcus/how-to-debug-a-hardfault-on-an-arm-cortex-m-stm32/ta-p/672235

To be updated soon...