help to MTK 3329 5hz firmware

How do I back up MTK 3329 firmware it? I can download to upgrade the software, but there is no backup

http://code.google.com/p/ardupilot/wiki/MediaTek

May I ask who can provide the following MT3329 5HZ 38400 firmware it? Thank you very much。

 

 

 

I have u

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