First follow these below steps:-
WARNING ! The author or topsony.com cannot be held responsible for any damage of your phone. follow this guide at your own risk !
GDFS backup:
1. Shutdown phone, Reinsert Battery.
2. Click on "Read GDFS" Button on Setool 2 lite.
3. Connect phone holding "C" on ur phone.
4. In Few Minutes, Setool 2 lite says Programming Flash
5. And it says Unplug Cable, So Unplug Cable and reinsert battery after few seconds.
6. Press "READY" button on setool 2 lite and then Connect phone holding "C" on ur phone.
7. SeTool 2 lite will now Read GDFS.
8. After it says Elapesed XX seconds. Click on Quit and Unplug.
Apply Patch:
1. Start Setool 2 lite.
2. Click "..." button on Misc and select your VKP Patch
3. Click "Write Script".
4. Connect phone holding "C" on ur phone.
5. Wait for Processing.
6. Setool 2 again says Unplug Phone, Unplug phone then.
7. Reinsert battery and Connect holding "C" and Press Ready.
8. You get an option then, Click NO to apply patch.
9. To Remove Patch Click YES Instead in Step 7. Now Patch will be applied !
10.After it says Elapesed XX seconds. Click on Quit and Unplug.
if the above instruction doesn't work then go through [TUTORIAL] Method to install the patches on W550/K750/W800/W300/W810/Z550 {DB2010}
The given link is tested for my w550i, I got success.




