Yes, that is correct. The intention of buying this was to use but I learned a lot owning a non usable car lol.That's important context you should have pointed out from the start, it seems you messed with this car much more extensively then you initially pointed out. If the clock can be dialed back, you should have entered the service mode to see the alerts before doing any swaps of parts. Now it's not clear if the alerts are there originally or if it's a result of you swapping the parts.
But anyways currently it's pretty clear the car is refusing to connect the HV because of the firmware mismatch.
I can try to get a new LV battery, try to fire up toolbox and clear codes. It’s a shot in the dark, as I’m unable to find much info on toolbox or someone who actively uses it.
Let’s see if someone who has experience with toolbox can chime in.