heloo i have a crystal chip 2,0 i buy it and install it and it is not working what do you thing is the problem thare comes a lack sicreen when i turn the ps2 on pleasee unswer me
What has this to do with FIRMWARE???
Please ask the seller for support.
I agree, this has nothing to do with firmware.
About your problem, I can almost garrentee you have installed the modchip incorrectly. Go find a modchipper and get him to fix your PS2.
nothing to do with firmware
Learn how to solder.