boot_rom regeneration for NIOS cpu

Hello

I´m using Quartus V13.1 with NIOS cpu. Now we want do use remote update function.

According to the application notes we changed the boot_loader source files from diretctory "C:\altera\Quartus_13_1\ip\altera\nios2_ip\altera_nios2\boot_loader_sources" and compiled them.

The newly generated File "cpu_epcs_controller_boot_rom.hex" was copied to "<MyProject>\Src\cpu\synthesis\submodules" and it worked. We could download an update version fo FPGA and NIOS and it was running.

But now I have the problem, that the file "cpu_epcs_controller_boot_rom.hex" gets regenerated on each fpga fitting and it is always the origingal version which takes NIOS software from the begining of the EPCS.

Dose anyone know which skript or make file generates the "cpu_epcs_controller_boot_rom.hex" each time. Changing the source files in directory "C:\altera\Quartus_13_1\ip\altera\nios2_ip\altera_nios2\boot_loader_sources" did not work.

The same sources are also on "C:\altera\Quartus_13_1\nios2eds\components\altera_nios2\boot_loader_sources" Changing this sources did alos not work.

Thanks

Robert