Funny that someone should ask this question! I have just receive an e-mail from Dave at CheapHumidors.com about this topic today no less so here it is and I quote:
Subject: How to Restore Dry Cigars
--------------------------------------------------------------------------------You discover a box of your favorite cigars that you left in a
closet for six months, and the cigars are as dry as a bone. What do
you do?
First, have patience. Put the cigars in a humidor that hasn't been
charged in the previous week. Let them rest in the slightly dry
humidor for a few days so the cigars absorb some humidity. Then,
partially fill the humidification system, letting the cigars rest
for another week before fully charging the humidity regulator. This
process will ensure a slow absorption of moisture, preventing the
cigars from getting too much humidity too soon. If you shock the
cigars from too much moisture, they may burst.
If you have a cabinet-style humidor, first place the cigars as far
from the humidification device as possible, moving them closer to
the humidification device little by little over a period of six
weeks.
In any case, do not light up until the cigars are supple to the
touch. A dry cigar will burn too hotly, and the flavor will seem
burned or carbonized.
The same principle applies to cold cigars or ones that have been
stored frozen, a method some people use. (There's nothing wrong
with this method except that the cigars don't age.) You must allow
the cigars to return to normal temperature slowly. If you light
them too soon, the abrupt change in temperature may cause them to
crack open or explode. Give chilled cigars at least two or three
days at the proper temperature in a humidified environment before
lighting them up.
Funny enough it was just a radom e-mail I have had to rescue cigars in past but I didn't ask Dave about this and got this e-mail, I guess I am on his mass e-mail list, but he is a nice guy and his company seems really great. Best of luck on fixing them. I also let mine sit mixed with fresh ones for another six months and results were better than I expected.
