Dealership saying Uprev tune blocking Key fob reprogramming?

JenovaI

Updates.. talked to ByThaBay on the phone, helpful info from him, thanks Eugene. He recommended trying a different locksmith with a different tool to see if they can get past it. No dice, we had the autopropad and autek tools, still ecu communication failure. Further info to add in case it jogs anyone else's memory of an issue:

1) The car constantly triple beeps when the driver door is open, regardless if the car is off, the key is out of the slot, etc. From my searching this usually means "car is in Acc mode instead of off" (it skips acc mode entirely so donno how that would be possible), or it's not in park - now it's in park, and i even did a few swaps back and forth to neutral in case, but I did see stuff on the internet about the possibility of it being in P and saying P on the dash but still thinking it's not in P. Would that stop ecu communication from Consult and Locksmith tools tho? Doubtful

2) When I had a steering lock issue in the past i used the mallet then cut the brown wire solution. I tested reconnecting the wire via a piece of wire i had available and the steering lock still doesn't lock though, so it's either seized in unlock position or the locksmith "unlock steering wheel" command is keeping it open still. I tested unpluging the connector entirely and it shut the entire car down from doing anything, so I feel like this isn't an issue. Wouldn't the consult be able to say "hey the steering wheel lock isn't working" if it was? Unlikely to be the issue i guess.

3)I'm considering buying a BCM, they're only about 185 at a nearby dealership, and swapping it out then asking them to try again and mate the new one to the ECU. I wish i could have someone who's an expert on this confirm that the BCM is the first line of communication to the ECU though. Why would consult have an "ECU communication failure" message when trying to get to BCM self diagnostics if it just talks directly to BCM?

4) Tempted to buy a used Uprev cable and see if it successfully connects to the ECU or not. Is there a possibility that Church's custom tune from 7 years ago completely blocks communication from any other tool? Unlikely but maybe? I wish stillen actually called me back, I've left them 3 ******* messages asking for help, they're on the same block as the car so I could borrow a cable from them or pay someone to walk over and test it out.