[ECOS] error in using serial port to update image

[mojo Ma]

Greetings.

I tried to upload eCos image to the IXDP425 board by minicom (xmodem) via 
the serial port.
But failed as the follows:

RedBoot> load -r -v -m xmodem -b 0x01600000 zImage

CCCCCCCCC...........Can't load 'zImage': Timed out

My UART communication configuration is correct. Can anybody point out what's 
wrong?

Thanks in advance!

- mojo

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