It's right, you need to press 2 insted of C on W880 phones. So when the guide or program sais to press C, you need to press the 2 key.btw, add the info that you need to press 2 on w880i's ( don't know about other one's )
Have you ticked the db2020 security bypass? If you followed step by step the the guide, then I have no clue what's wrong.
You can try the jdflasher, instead of SETool2 Lite.