Missing bootloader command

[Elmue]

The AN3156 explains on page 18 the Read Unprotect Command:

This command is selected when wValue = 0 and the first byte of the buffer sent by the host
is 0x92. The buffer length is only one (the command) byte.
The host sends a DFU_DNLOAD request with the above parameters to remove the read
protection of the internal flash memory.

 

It is very useful that you implemented a command to remove the read protection.
But this is useless if there is also a write protection active.
The user has no way to remove a write protection over the DFU protocol.

Why does this command not remove both: The read protection AND the write protection at the same time?
Why does STM implement nothing that allows to remove a write protection ?

[FBL]

Thank you ​@TDK for your support!

​@Elmue We understand the need in internal bootloader and consider it a valid request. At this stage, our engineering team acknowledges the request and the need behind it; however, similar complaints have not been widely observed and adding new protocol commands requires additional validation effort, they will study it for possible inclusion in a future product.

Thank again for spotting the need and sharing your requirement.

[Elmue]

You use the STM32H7 and not a STM32G0B1 with read and write protection.

Your answer is totally useless.