here is my problem:

I want to install a stage 3 ecu in a 2002 GTI. The stage 3 ecu still has immo in (immo2 since it's from a 2001 wolfsburg) and I can't make it fit to the GTI since the cluster is immo3.

Could i just "copy" the stage 3 ecu and dump it in the 2002 without messing with immo coding?. The problem I see tough is that I'll have to do both eadings and writings in the GTI as I don't have benchflash neither the original owner of the stage 3 ecu.

If I can't I would like to know how to disable immo3 for future work I'll do

hmm shame, get the ecu IMMO defeated.  but it should work anyways ive made a lot of ecu swaps over time in my 2002 gti with earlier ecu's(DL) which is from the 2001 AWW engine code, where mine was the AWP(HS)

AFAIK nothing can really read the entire immo chip. Usually its just dumps off the ECU's memeory.

yeah revo stg 2

but like I said In my previous post, if we have acces to a 2001 ecu, could I program the cluster to make it believe it's the AWW ecu and just do the adaptation immo1 trick with vagcom? or the damn black box that match to the key transponder chip will f*ck me over?