Try...
Fast beeping usually indicates an empty channel, no programming, or a bad download to the radio.
Hopefully, you downloaded and saved a safe copy of the original data. Did you try re-downloading the original data back to the radio? That would be the best solution.
The software (CE39?) should have come with a few default data sets. If the file on your PC is corrupted, you may have to create a new one, or find an identical radio and copy that file into your radio.
Either way, you shouldn't have a brick.