STM32F103 - In Application Programing RTX from SD card Help

Hi every one,

I have a STM32F103 Board with an SD card . My project has a simple idea.( Im not sue, I could be simple for begginers like me)
New firmware has to be copied Sdcard like “Firmware.bin”

When MCU starts ,

If the file is exist
        Start firmwareupdate
else
        Jump user App

I’m using FLASH-FS to read firmware file from SD CARD, and write is mcu flash. I inspired AN2557 IAP from USART application and , MCBSTM32 RTX_Blinky projects. Is that possible to IAP using RTX ?

I can read firmware file and write is flash, but I can’t handle jump application. Im stuck now.

This is code what I try,

if(checkfile("firmware.bin")==1){
      os_dly_wait(50);
      firmware_update("firmware.bin ",0,2048);

 }else{

      JumpAddress = *(__IO uint32_t*) (ApplicationAddress + 4);
      Jump_To_Application = (pFunction) JumpAddress;
      /* Initialize user application's Stack Pointer */
      __set_MSP(*(__IO uint32_t*) ApplicationAddress);
      Jump_To_Application();

 }

I got error message ;

Blinky.c(114): error: #20: identifier "__IO" is undefined
Blinky.c(117): warning: #223-D: function "__set_MSP" declared implicitly

Do you have any suggestion to set mainStackPointer and __IO for RTX blinky project. And please some details about what I must do with jump part

Thanks your help