I've got a custom board built around an STM32MP135AAE3. It's designed to have an eMMC instead of an SD card, the problem is that the board was not laid out correctly and the JTAG isn't connected.
I'm having trouble writing to the eMMC (that's another topic) but I'm trying to make some progress while waiting for a board spin. The board is in serial boot mode so I'm able to upload bootloaders, am I allowed to upload any arbitrary program and call it a bootloader? I'm thinking I could start testing board features by uploading small programs to test the board if that's allowed with a "bootloader".
