xakh@WarMachine:~$ sudo usbboot -c "boot;nprog 0 openwrt-xburst-u-boot.bin 0 0 -n"
usbboot - Ingenic XBurst USB Boot Utility
(c) 2009 Ingenic Semiconductor Inc., Qi Hardware Inc., Xiangfu Liu, Marek Lindner
This program is Free Software and comes with ABSOLUTELY NO WARRANTY.

Now checking whether all configure args valid: YES
Current device information:
CPU type is Ingenic XBurst Jz4740
Crystal work at 12MHz, the CCLK up to 252MHz and PMH_CLK up to 84MHz
SDRAM Total size is 32 MB, work in 4 bank and 16 bit mode
Nand page per block 128, Nand page size 4096, ECC offset in OOB 12, bad block offset in OOB 0, bad block page 127, use 1 plane mode
 Execute command: boot
 CPU data: Boot4740
 Already booted.
 Execute command: nprog 0 openwrt-xburst-u-boot.bin 0 0 -n
 Programing No.0 device, flen 444660, start page 0...
 CPU data: Boot4740
 Erasing No.0 device No.0 flash (start_blk 0 blk_num 1)......
 Finish! Return: 80 00 00 00 00 00 00 00 (position 1)
 Force erase, no bad block infomation!
 Size to send 444660, transfer_size 524288
 Image type : without oob
 It will cause 1 times buffer transfer.
 Writing NAND page 0 len 446464...
 CPU data: Boot4740
 Finish! (len 446464 start_page 0 page_num 109)
 Checking 446464 bytes... no check! End at Page: 109