endrit

Hello to everyone, I am quiet new in this and I am trying to put 128mb to my xbox but no success so far. I TSOP it with evo x and then I installed the ram the I thought it will work but nothing at all. what kind of bios accept 128mb ? do I have to install an chip or TSOP is fine? Now I need to remove the ram and see if the xbox still runs but I am a lot into it and definitely I want to succeed. If there is any suggestion it will be great. Thank you very much