Operation error

[BPark.5]

FlashSTM32H7xxxl_BANK1.flash operation error

I want to know the cause of this message.

Of course, it's not your program.

The above example is an example downloaded through STM32CUBEMX.

[Tesla DeLorean]

https://community.st.com/s/question/0D53W00000wzGplSAE/connectiion-error

So, the board and comms work Ok.

If the loader in IAR isn't working you'll need to look at those settings, as available. Perhaps if there are some dual banking settings (side-by-side, end-to-end) perhaps report those.

If TWO options for the flash, pick the OTHER setting, and see if that works. Or change the banking option bytes.

Installed available patches for IAR?

STM32Cube_FW_H7_V1.5.0\Utilities\PC_Software\IDEs_Patches\EWARM\EWARMv8_STM32H7xx_Support_V1.zip

[Tesla DeLorean]

STM32Cube_FW_H7_V1.8.0\Utilities\PC_Software\IDEs_Patches\EWARM\EWARMv8_STM32H74x-75x_Support_V1.6.zip

[BPark.5]

first . which one download? (STM32Cube_FW_H7_V1.5.0\Utilities\PC_Software\IDEs_Patches\EWARM\EWARMv8_STM32H7xx_Support_V1.zip /STM32Cube_FW_H7_V1.8.0\Utilities\PC_Software\IDEs_Patches\EWARM\EWARMv8_STM32H74x-75x_Support_V1.6.zip)

Second. how to download? I mean that I can not find both

[Tesla DeLorean]

I'd probably go with the latter, being newer

These are from the CubeH7 packages, usually will be in your repository directories if using CubeMX or CubeIDE, or you can select and download from the CubeH7 page on ST's site, or perhaps the files from their GitHub