I set the light to flash in the app, but after jumping to the app, the light is not lit. I don't know if there is a problem with the jump program or a problem with the APP program. I am upgrading the program by receiving the bin file.
Check the disassembly of your jump - the M4 is a thumb instruction set, so if the compiler is using a BLX instruction to jump, you need to make sure that address' bit[0] is "1" (I had this problem in my bootloader as well)
