1.put your zImage & ramdisk.gz to here.
2.run ./bb,got linux.bin
3.use upgrade tools in windows or linux (./download ) to download linux.bin

Force going to upgrade and assign mode:
	1.power on ( ReadyLed & StatusLed are turned on)
	2.push botton
	3.wait ReadyLed turning off
	4.release botton soon in 1s,go to upgrade mode
	5.wait 1-2s,release botton in 4s,go to assign mode
