BQ27Z561: How to verify uploaded golden image file to bq27z561 ?

I have uploaded golden image file to bq27z561 using code of slua801a application note  without bqstudio and ev2400 . 

i want to know if i write below code to upload configuration file to fuel gauge.

[Q - 1] Is my approach is right to verify golden image file written to my fuel gauge ic successfully ?

int main(void)
{
    TI2C i2c;
    void *pHandle = (void*) & i2c;
    int nSourceFile;
    struct stat st;
    long n;
    int nSeconds;
    unsigned int nResult;
    char *pFileBuffer;

    unsigned char pData[DC_STATE_LENGTH];

    printf("gauge test\n\r");
    if((i2c.nI2C= open("/dev/i2c-2", O_RDWR))<0)
    {
        printf("cannotopenI2C bus\n\r");
        exit(1);
    }

    printf("openend I2C bus\n\r");

    gauge_address (pHandle, GAUGE_DEVICE_ADDRESS);

//    nResult = gauge_control(pHandle, 0x0001);
//    printf("  FW_VERSION= 0x%04X\n\r", nResult);

    nResult = gauge_cmd_read (pHandle, 0x2c);
    printf("  VOLTAGE = %04d [mV]\n\r", nResult);

    nResult = gauge_control(pHandle, SUB_CMD_CONTROL_STATUS);
    printf("  CONTROL_STATUS= 0x%04X\n\r", nResult);

    stat(SOURCE_FILE,&st);
    printf("source file '%s', size = %d\n\r",  SOURCE_FILE, st.st_size);
    if((nSourceFile= open(SOURCE_FILE,O_RDONLY))<  0)
    {
        printf("cannotopendataclassessourcefile\n\r");
        exit(1);
    }

   pFileBuffer =(char *) malloc(st.st_size);
    if(!pFileBuffer)
    exit(1);
    read(nSourceFile, pFileBuffer, st.st_size) ;
    close(nSourceFile);

   printf("%s",gauge_execute_fs(pHandle, pFileBuffer));

// above line print nothing so i think configuration file uploaded successfully

    free(pFileBuffer);

    close(i2c.nI2C);
    printf("closedI2C bus\n\r");

}

-----------------------------

[ Q-2 ] is any other way is there to verify my golden image file uploaded successfully  or  not to bq27z561 ?

[ Q-3 ] Is it neccessary to chage parameter through code because i think flash stream file know design capacity, design energy, terminate voltage and taper current ?

[ Q-4 ]  If any where i am wrong please let me know ?

Thanks,

Ti community.