The rest file is a little part of the MAIN which gets destroyed by the breakin.
Your phone didn't start up because of the messed up main.
The rest file replaces the 4blocks that get destroyed. If you flash the whole main in order to get your phone working the patch is obviously removed ;)
SE Tool lite comes with many restfiles but adding them for every firmware version would cause a huuuuuge download file.
Well, same goes for me: I answered your questions on se-nse, now here ;)
You're wellcome





