TMS570LS3137: Boot Loader not working as expected for flashing 2 different .bin files

This is for Others who are using this Boot loader and failure occur .
I have found that the boot loader always accepts multiples of 8 bytes , if the .bin file has 6 bytes to write at end of the file it is OK and works as expected .
The failure occurs if the size of .bin file is 8002 bytes size and you develop script to write 2 bytes at first and than continue writing 8 bytes every next time




while( bytes_remain > 0)
{
Fapi_issueProgrammingCommand((uint32_t *)dst,
(uint8_t *)src,
(uint32_t) bytes, // SHOULD ALWAYS WRITE MULTIPLES OF 8 BYTES not less bytes unless EOF
0,
0,
Fapi_AutoEccGeneration);

while( FAPI_CHECK_FSM_READY_BUSY == Fapi_Status_FsmBusy );
while(FAPI_GET_FSM_STATUS != Fapi_Status_Success);

src += bytes; //Size_In_Bytes;
dst += bytes; //Size_In_Bytes;
bytes_remain -= bytes; //Size_In_Bytes;
if ( bytes_remain < 16){
bytes = bytes_remain;
}
}