Samsung galaxy p1000 baseband unknown error, need modem.bin for speakout | Phone/Device Issues and Features | Consumer forum

I have the samsung galaxy p1000, with cyanogen9, and try to upgrade to cm10, get an error and lost the baseband, it is now unknown, , I use the restor and now I am back to cm9 without baseband.
I did find JPZ,and T-mobile modem files, but don't know which one is best for the speakout, so that I can do call and web as before, too bad I did not write down the baseband version before.
What should I do to fix this problem.
I saw someone mention using Root explorer to copy modem.bin into /system/radio, is there any free program can do the same thing too, or I have to use odin 1.85
any suggestion welcome.
thnaks.