Error: Config Error: Failed to update IO firmware

[ling_huang]

Config Error: Failed to update IO firmware …
firstly put the IOMCU bootloader on the IOMCU usinga stlink.After that ,we load a normal firmware on the main cube.and then error for that

Config Error: Baro: unable to initialise driver …
After restarting, this problem（Config Error: Failed to update IO firmware） occurred again。

fmu(stm32h743) iomcu(stm32h103)
Thanks in advance for your help!

[ling_huang]

fmu uart6 and iomcu uart2 communication has waveform。meaning IOMCU have reply to FMU.

[guo_mis]

How did it work out?

[ling_huang]

The default IoMCU crystal oscillator is 24M. If your one is 8M, please pay attention to the corresponding matching

[igoutta (Gustavo Alvarado)]

I don’t understand. Is this a solution for the error with IOMCU, or a question?