The SBM Utilities for Newton is a collection of tools primary for developers, but some - like Backup and Restore - are usefull for everyone.
IMPORTANT NOTE
With the SBM Utilities you can modify system internal data. Doing this can cause you Newton device to hang or crash. At the worst, you must do a cold boot with the result of a total data loss. If you are not completely sure you're doing the right thing, DON'T do it! The author of this program will not be responsible for any data loss or other bad things.