Hi

This is a late firmware release message , as you may know there is a new case design in batch3 machines. new case design come with new temperature sensor, this improvement make the temperature more close to the real chip temperature.

This new machine have to use this new firmware 20130723, please read the ChangeLog below for more information
  https://en.bitcoin.it/wiki/Avalon#20130723

This release works just fine on old type. if you are in summer, I would advise setup:
  Target Temperature to 50℃ and Overheat Cut Off Temperature to 70℃ (this is my configure)

Also we have more overclock options in this release. just pay more attention on heatsink and PSU when you want do static overclock.

BTW:
  Some people report that some fpga controller not working. you may want read this: https://en.bitcoin.it/wiki/Avalon#Issues
  the QFN re-work is not easy, you have to find the professional people doing this. (the ft232 have to clean before soldering again)

Again, please donate to cgminer developers.
  https://en.bitcoin.it/wiki/Avalon#Donation

Xiangfu