This is first time I tried to do it (never done before). I searched online and found on Youtube that I can debrand me W580i AT&T phone. I follow the instruction with SETool. I don't know what I did wrong the first time, but my phone now turned on with like very old sony Ericsson phone (bad Graphic), and can't use it at all.
Is there any way to fix it? or my phone is damaged?
Thanks