02-27-2014 08:19 AM
Oooooops. That was totally my fault. I completely miswrote that. You are correct - ON-SYMB was the keycombo I meant to give you. Sorry about that.
Yes, there are firmware updates. Please install the connectivity kit and it will automatically find them and keep you up to date as they come out. That page linked to is a non-standard method and tool that I would highly recommend you not use.
I am quite sure your battery isn't damamged. Rather, it was just sitting in the box for a long time from the factory and so it had run down.
Although I work for the HP calculator group, the views and opinions I post here are my own.