I'm sorry for you mate.I would guess so, and wish I knew that earlier, it was supposed to be able to UPGRADE without wipe, otherwise if I would have gone the standard way of backup, titanium backup, wipe, flash; I would not have goten any damage for sure.
Iv'e been a big Samsung fan for years, blowing steam into iPhone users ears,
but now it's hard to tell people samsung are awesome. This failure is high in my failure scale
And it's a none-linear scale.