Here you are!

Spoiler: HWID 0827 SW VER.500
http://www76.zippyshare.com/v/66742031/file.html


BUT REMEMBER!!! In most of case downgrading of 205 series devices from version above 5.10 will kill device without any recovery possibility! Only physical low level programming of internal memory chip give certain chance to success

P.S. But I know that you want compare this version with old true original 250W SW - you can see it is absolutely different device and it have not synchronized SW.