If the unit can be seen in Mass Storage Mode by PC it isn't 'bricked' at least.
What exactly have you deleted? Garmin Express or WebUpdater can replace many files such as text, keyboard, voices and vehicles etc but it should still start and work even without such files. I and other members also have backups of folders and files for many units including nuvi 2x0, but the big concern at present is why it 'won't work' which i assume means it can't boot. From memory, 2xx won't boot without at least an empty Garmin folder on board so if you've deleted that create one in the root and try again. [x:\Garmin]
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