Originally posted by TheSaltCracka
I had the same problem, they won't work because you're on dex. Convert to cex then downgrade to the Other Os + special pup. Install Chaos Air Bringer. Use a hex editor to make a mac.bin with your new mac with the first 6 digits of your old mac and the last 6 digits of random letters and numbers in this format- ex: (1A 2D 4b 6C 42 Ff) with each two digits/ letters being a new byte. Place that file on a flash drive, Run chaos air bringer twice, restart your ps3 then boom you have a new MAC Address. Then convert back to DEX and upgrade to PS3 ITA. And you're unbanned!! Note- to convert from dex to cex and to convert back to dex you can still use the same NOR/ NAN files you made to convert to dex the first time. If you used 4.20 REX to convert to DEX just put those files on your flashdrive get back to 4.30 D-REX and do what you did before to swap. Hope this helps!!
Are you sure this unbans your account from the black ops 2 servers? cuz i changed my mac address, but i changed to a format with only numbers. and i also ran chaos air bringer once, but my mac is changed. Im still banned