To get back deleted data from a USB drive manually, you can try using the Command Prompt. Connect your USB drive, open CMD as an administrator, and type chkdsk X: /f (replace "X" with your USB drive letter). Then, use the command ATTRIB -H -R -S /S /D X:\*.* to recover lost files. However, this method doesn't always guarantee results.

For a more reliable solution, BLR Pen Drive Data Recovery Tool is an excellent option. It efficiently recovers deleted, formatted, or corrupted data from USB drives with ease.