On my bootloader efforts i now have two applications: A bootloader app located (using Target Options) at address 0x00000000 and the main app located at 0x00003000. The bin file for the bootloader is created correctly as a .BIN file. For the main app, fromelf creates a directory(!) instead of a file. Directory contains two files: ER$$.ARM.__at_0x02FC ER_IROM1 both without file extension. I use this user command for the main app fromelf --bin --output .\Debug\SAP-2L-JUM.bin .\Debug\SAP-2L-JUM.axf and this user command for the loader app fromelf --bin --output .\Debug\SAP-2L-UPDL.bin .\Debug\SAP-2L-UPDL.axf How to get a bin file created for the main app? Best regards, Juergen.