[U-Boot] Swiching u-boot image in SPI-NOR

[JYOTI DUBEY]

Hello
      I am trying to bring in u-boot.imx (uboot image of u-boot 2013) onto
SPI-NOR of nitrogen 6x board.I used following commands:
>> sf probe 1
>>sf erase 0 0x40000
>> fatload mmc 0:1 12000000 u-boot.imx
reading u-boot.imx
343040 bytes read in 54 ms (6.1 MiB/s)
>>sf write 0x12000000 0x0 343040
ERROR: attempting write past flash size (0x200000)

I have no clue as how to overcome this error.Can somebody help me with this
error.


Thanks in Advance!