Hi, I'm from Brazil and I bought a Sim Max 12 in 1 Reader and Writer with a Blank Sim Card that can have 12 numbers inside. I already know that nobody have discover a way to read a comp128 V2 Sim Card. And all Sims here in Brazil now are V2. I'm open this topic because today I have saw a key in my reader, there's like a interruptor that can be changed in 2 ways. It's black and it's very short. Do anyone know what it's function? It's for the frequency of the chip? Mine is 7.14hz. For example, if I turn down the black key that is in the reader the frequency will be 9.14 for example? Do anyone know that?

Thanks,
Felipe