Originally Posted by knowlogy
my ps3 brick no orange light no hd activaty no display CECH 3004 B
but i flash it back using my bios dump still not working i cut the A/B and sold the A still no working but i have errors on my bios dump please help me
You can not downgrade cech-3004b. You will brick when attemping.
If you solder a wire from sbe to tristate and flash your original bios in flash fun mode. You should be back to the original state.
This is assuming you have a good backup. I don't think there is anyway to fix, if you don't have a good backup. Because you would not be able to fix by downgrading, cause you can't downgrade.
You should of done more research. It is well known that 3000 series is not downgradable.
You should of known also not to flash anything, without an error free backup.