If you had already the ghost touch issue, the software update very likely would not solve the issue. You have to replace the touchscreen anyway no matter if the dealer messed up.
The good news is that there are plenty of used screens for a couple of hundred dollars and to replace it is as easy as replacing a radio. A lot of videos online.
The good news is that there are plenty of used screens for a couple of hundred dollars and to replace it is as easy as replacing a radio. A lot of videos online.