How to enter into bootloader without Boot0 pins?
I am using STM32F407 to boot another controller which is STM32H573. According to AN2606, the pattern mentioned to make the controller enter into boot mode is pattern 17 where, PRODUCT_STATE = open, Boot0 pin = 1 and PRODUCT_STATE = Provisioning. in my slave board, the boot0 pin is permanently grounded and nor other provisions are provided. Anyways i dont want to write custom bootloader. I want to use the factory bootloader and its commands to write my new hex file program to my slave controller. So if iam not having boot pin access how will i enter into boot mode? this is one case.
In another case, instead of H5 series, another slave board which has F413 controller. If I dont have access for boot pins there, how will i enter into the boot mode since the pattern mentioned is pattern 1 : Boot0 = 1, Boot1 = 0. Anyways boot1 pin is permanently grounded. SO no issues. But Boot 0 pin is also permanently grounded.
So how to enter into the boot modes in these 2 cases?