u-boot flash error, NOT target for use by this device

[Daniel.Li]

Dear List,
I checkout a stable version right form repository.
* stable --> origin/stable

Compile it and flash to Nand, but it failed with below message. Is there
anything that I missed?

Any help is appreciated, thanks.

BTW, my FR is GTA_v6 HW.(FYI)

$ sudo ./flashuboot 
dfu-util - (C) 2007 by OpenMoko Inc.
This program is Free Software and has ABSOLUTELY NO WARRANTY

Opening USB Device 0x0000:0x0000...
Found Runtime: [0x1d50:0x5119] devnum=18, cfg=0, intf=0, alt=1,
name="u-boot"
Claiming USB DFU Interface...
Setting Alternate Setting ...
Determining device status: state = dfuIDLE, status = 0
dfuIDLE, continuing
Transfer Size = 0x1000
bytes_per_hash=4333
Starting download: [##################################################]
finished!
state(10) = dfuERROR, status(1) = File is not targeted for use by this
device
Done!
Resetting USB to switch back to runtime mode

-- 
Daniel.Li <lida_mail at 163.com>
PALFocus (http://palfocus.oicp.net)