How I can Update My Phone firmware

if you got the problem "your device is already updated
you must do this way

You'll need to change the product code. By this, you lose your warranty though.

For the 6630, you can change it to:
0518120 (RM-1) for firmware version: 6.03.40

To change the product code, download the Nemesis Service Suite [NSS] here:

Code:

http://www.b-phreaks.co.uk/index.php?main_page=page_2

Then, do the following:

1. Connect your phone and wait for Windows to install the drivers.
2. Open Nemesis Service Suite and click “Scan for new device” on the right-upper part of the window
3. Click on the icon “Phone info”
4. Click on “Scan”
5. Change the product code to 0518120 and mark the case “Enable”.
6. Press “Write”, and your phone’s product code will be changed
7. Then, try to update again via Nokia Software Updater

Note: This is potentially risky, but a lot (means, lot) of people say this is safe.