Consider it a lesson learned.So that means I "F"ed then I guess. This phone can be too much trouble than its worth sometimes.
***** happens, so do the best you can to prepare for it.
Always make a manual backup before running any updates.
Heck... make a backup whenever you make any significant changes to the contents of your phone.
I know iTunes is supposed to automatically make a backup when applying an update, but it too can fail.
Good luck.