w810i unlocking terms explained please

[mackydon]

Would like to unlock an 810i, explored the forum posts etc but would like some of the terms explained, if possible, I believe it to be 2010 cid49 but have not been able to confirm?,how do I do that, what is gdfs why is it best to back it up and how, what software will I need to unlock, for example what is xs++ I am sure there will be more questions as I get deeper into the concept, many thanks,
Rog

xs++ is a program used to flash the firmware of your phone. Flashign your firmware gets rid of operator logos n stuff. that vodafone, o2, tmobile etc like to put on phones.

Unlocking is easy on w810 but harder on new phones you just need to figure out what firmware you have, generate an unlock patch and then patch your phone.