I think the timezone thing is the least of your worries; at least for now.
I raised it earlier when I though the E_LIC_ALREADY_RETURNED message mightd have come out of attempting to copy a library book;
but I now know you never got that far.
You can change the time on the Sony itself; at least you can on my PRS-350; at settings/general settings/date and time.
More important to getting things working is the other question:
Q Was that in downloading/installing v1.7.2, or in trying to use it?
A It was at the tail end of the installation
Does that mean you never got 1.7.2 installed, so the remaining issues such as Sony not showing up were still with V2.0?