unloaded

OK I'm an idiot. I lost the ability to sync my X5, then after hours of trying different USB ports, different cables, etc etc,through a very long series of bad decisions, I removed my main battery (backup battery dead) and now have an expensive paperweight. Can the OS be reinstalled? How do I install ANYTHING if I don't have a connection? Sorry for the dumb questions, I've made a big mess here and would really appreciate any help you can give.

Thanks,