FirmWare Software Update problem in 6630

Hi,
Pls Help me ,i m trying since last 2 days.....PLs

My question is while i m going to update my firmware by using the nokiaUpdateSoftware which is available in the nokia site for 6630
but while i have intalled it at the last it giving me the Error like "The Update which r doing for the device is not available please try again".....
WHY is it so?
What is required more?

I have download the nokia Software updater from the nokia site.Whose size is 22 MB .I have installed it properly as well the other drivers are also installed in the PC.Which are the XML driver,nokia Flashing cable driver,cable driver.

After that it is asking for atach the device using cable after that it is also asking for updating the firm ware from old Version v_3_0 to v_5_2 but at the last it is giving the Error "For Your Device there is no Update Available.Please try again Later"

The Sofware which is 22 M.B. is geeral for the All Nokia Phone as far as my knowledge is concerned but for Nokia 6630,6680 it is not working