Default Samsung GT-S5830L

Greetings and Salutations,

I am having problems unlock network for the samsing gt-s5830l with PDA/PHONE S5830LUBKC1 and CSC S5830LUWAKC2. What i am trying to do is get an unbranded fw or either get the existing one to be able to unlock all networks. I have Android version 2.2.1 with a kernel FROYO.UBKC1.

PS thanks in advance for any help given.