Before wiping with JL_Cmder, try some of these steps to see if you can get your device working how you want.
As for the backup file. Do a search of your PC for *.ipd. That is the file extension your backup will be. Look for the most current date.
As for the browser and everything not working, try resending your service books. The quickest way would be go into Options > Advanced Options > Host Routing table > Menu Key > Register Now. Make sure you're in an area with adequate coverage. Also are you seeing 1X or 1XEV in capital letters or lowercase?
If the re-registering the HRT doesn't work, try these steps.
How do I resend my service books? - BlackBerryFAQ