Programming error on the physical calculator only

[gabrieljcs]

Ok, I managed to connect it by changing the USB. First thing the Connectivity Kit asked was to update the firmware. I said "Yes", it gave me an error (104) and I'm now stuck on the recovery mode.

EDIT: Ok, I'm seeing in a lot of other threads that I'd need to run updater.exe. The problem is I still get the same error. I don't really want to install Windows just for that, and I'm pretty sure the update didn't start (no progress bar was shown). Is there a way to just reboot it in normal mode? Is it safe to reset it from the button on the back? Remove the battery, perhaps? I also read that the Connectivity Kit is completely brick-safe because it doesn't mess with the boot loader. So, if I reset it I'll still be able to at least enter to Recovery Mode, right?