N7000 Rear Camera Fail after downgrade

Hi
I've a N7000 with 4.1.2 stock rom, I downgrade to 4.0.4 itv rom with only pda and no pit or other, no error during downgrade, when finished the phone works but rear camera no work, I try to make the test with *#0*# code and front camera is ok but rear camera nothing. I try to reinstall 4.0.4 itv, 4.0.4 h3g, 4.1.2 itv and also 4.0.4 itv and h3g with PIT file, but nothing!

Can anyone help me?

Thanks a lot!