This program is a hack written in order to clean up the fallout from a
previous screw-up of mine.  I have started using my first Pirelli phone
(the very first one I got from ebay, and its firmware version is different
from all the later ones I got) as my personal everyday phone before I made
a dump of its flash2 bank, which contains the FFS.  As a result, the
earliest FFS dump I have for this phone is already contaminated with some
private personal information.  I want to release this FFS image on my FTP
site along with the firmware version it goes with, but first I need to
"roll it back" to a point just before it got dirtied with the non-releasable
personal info.  This hack-program seeks to accomplish the feat.