We are working on STM32F103ZE microcontroller with RTX. We developed an application starting from base address 0x0800 0000. It runs fine. Now we have developed a bootloader which is stored at location 0x0800 0000. The application start address is pointed at 0x0800 2100 when using bootloader. While trying to run the application with bootloader in place, it enters main function and we can debug till the point it calls os_sys_init function call. After that it hangs. We have done changes related to shifting the Vector Table Offset. Are there any other settings we need to take care of while using Bootloader+Application(with RTX)? Any help will be appreciated.