So, I'm just catching up to stuff. I hadn't realized so many awesome tweaks have been made until recently. I edited some of the UI myself back in 2014 to get the audio sources and stuff in the right order -- the "OG" stuff on the unmaintained website.
I was going to get all this stuff loaded on my car, but I took it to the dealer last week because the rear camera was acting up. I also had a recall on the infotainment system and a recall on the ECU that was required to register the car this year. Unfortunately they put me on the 502 firmware and I quickly realized the AIO stuff doesn't work

Nor does SSH, as mentioned in previous threads. I had a late night a few nights ago probing around with a USB-Ethernet adapter. I wish they hadn't applied the infotainment sys recall

I was on some old v2x version that I had updated to myself and it was working perfectly all these years.
So what's up with the serial console stuff? Is it that they've changed the credentials, so there's no way to get in with it?
How does the data retrieval stuff work? Is there any way to execute anything as a regular user on the system? On Android, I see companies like LG patching commonly used entry points to root, but still leaving the door wide open for exploits like Dirty COW. If only we had some sort of local user access, we could leverage some sort of privilege escalation bug.
I'm bummed I got the locked-down firmware, but I'd really like to help in any way I can. My background: Software eng / Linux user with 18 years of experience.