Actually no sorry I don't think that will be the case, once u update to hboot 1.02 you won't be able to downgrade again to any hboot lower unless there's a smart cookie able to hack the flasher to force flash it, besides, when you sent off your unique ID token to HTC so you can get the unlock binary, they will now have it on record you unlocked your phone and agreed to void your warranty.
sent from my legend, currently using zeubea ics beta0
Update: 8th January 2014
Samsung Galaxy S4 😆😄Echoe rom v12 😄😆👍 + philz recovery.
HTC Desire HD
(Hboot 2.00.0029 AND S-OFF)
SVHD V 2.1.0
Retired HTC Legend