The Collaborative International Dictionary of English v.0.48:

Revamp \Re*vamp"\, v. t.
   To vamp again; hence, to patch up; to reconstruct.
   [1913 Webster]

WordNet (r) 3.0 (2006):

revamp
    v 1: to patch up or renovate; repair or restore; "They revamped
         their old house before selling it"
    2: provide (a shoe) with a new vamp; "revamp my old boots" [syn:
       vamp, revamp]

Moby Thesaurus II by Grady Ward, 1.0:

74 Moby Thesaurus words for "revamp":
   accommodate, adapt, adjust, alter, ameliorate, amend, better,
   blue-pencil, break up, change, convert, correct, deform, denature,
   diversify, do up, edit, emend, emendate, face-lift, fit, fix,
   fix up, furbish, improve, meliorate, mitigate, modify, modulate,
   mutate, overhaul, overthrow, patch, qualify, re-create, realign,
   rebuild, recense, recondition, reconstruct, rectify, redact,
   redesign, redo, redraft, refit, reform, refresh, refurbish,
   rehabilitate, remake, renew, renovate, repair, reshape, restore,
   restructure, revise, revive, rework, rewrite, ring the changes,
   shift the scene, shuffle the cards, subvert, turn the scale,
   turn the tables, turn the tide, turn upside down, vamp, vary,
   work a change, work over, worsen