Hey Folks

To cut a long story short I managed to unlock my K800i and then lock it again by using the SE update software "crys" so its CID 53 now. It now only works with the original network it was set to which is 3 :(

Im new to the world of unlocking mobiles but ive seen a few sites that say you can download some software and buy credits and unlock it using the USB cable that comes with the phone. Its this correct? and if so what would be the most cost effective and best option to go for? ie reputable sites etc..any help or advice appreciated.

Cheers
Yves