Hopefully, someone can help me.  I decided to update to the newest 1.81 flash memory on my JTV 59 and now that I have the modelling has pretty much crashed.  All I get on every single model position is a very quiet acoustic guitar.  No tunings, no Tele's, Strat's, etc, etc.  What the heck???

I need to update as I want it to be able to interface with my brand new HD500.

Any ideas?  Rollback and try again?

Thanks for any help!!