Control does not come to application main loop

Hi All,
After long time I was trying to recompile and load the firmware in MCB2300 board and uversion 4.
This project was actually developed for a hardware which was developed based on MCB2300 board schematic and uversion 3.

To a maximum end i have copied the configuration of existing settings to uversion 4.

Now my problem is that program control does not reach main loop. I have a boot loader running. So here i have given the last few lines of boot loader code.

/* Run appliication at specified address */
static void cmd_run (char *par)
{
  int run_addr;
  U32 i;
  PFV fp;

  run_addr = DEFAULT_RUN_ADDR; // #define DEFAULT_RUN_ADDR      0x10000

  fp = (PFV)(run_addr);
  DEBUG_Printf("Run applicaiton at 0x%x...\n", run_addr);
  for (i=0x1000;i!=0; i--);
  (*fp)();
}

on-chip
IROM1 = 0x10000 0x80000

on-chip
Default IRAM1 = 0x40000040 0xFFC0 IRAM2 = 0x7FE00000 0x4000 NoInit

Can anyone point me what would be the problem here?