ok this has probably been asked before but here goes.

I have dead battery in my 06 octavia 2.o fsi ambentiene. i have on code for stereo what now???????????????

I presume you meant "no code for stereo". Your local dealer can supply/recode your unit for £15.

it should sort itself out, the code is stored in the cars central ECU. Turn on the ignition, do not start car and then switch the radio on and after a short time the radio should come on without you needing to enter the code.