The word “revamp” means

To patch up or restore; renovate.
To revise or reconstruct.

So so if revamp means to patch up, what does the word “vamp” mean?

To patch up (something old); refurbish.
To put together; fabricate or improvise.
Music. To improvise (an accompaniment, for example) for a solo.

So basically vamp and revamp mean the same thing. Like flammable and inflammable. Except maybe revamp means more to patch up again.

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Actual Fact:

Leon Theremin, inventor of the Theremin, an electronic instrument you play without touching anything but the air around it (featured in the Beach Boy’s “Good Vibrations”), was convinced to the day he died that he could build a machine that would bring the dead back to life. He was still pursuing funding for this project up into his 90s.