Hello, I have to create a bootloader on a luminary micro. To start, I have just written a little program with a timer and at the end of the timer it branches to the start line of an other program stored in the flash before. So the second program starts but it is an RTX program and it crashes at os_sys_init (init); function. It seems that memory map with vector interruptions not working correctly. Is someone can explain me how to link correctly these 2 programs and how remap IT vectors? Thanks a lot Ludovic