Daniel,
If you have the option to upgrade in ActivManager, when you get to the window where you have the option for "File" or "Internet" select File > Load (navigate to the location where you saved the .bin files) and select OK. You will want to upgrade the ActivHub before updating the firmware on the ActivExpressions.
ACTIVHUB FILE*********
Your password is: MIDGAmEQ
Name: V5_13_bld_0000.bin
Size: 48.81 KB
Expires: November 19, 2013
ACTIVEXPRESSIONS V2***************
Your password is: RoloyxgW
Name: ActivExpression2_V12.06_01.rf
Size: 187.68 KB
Expires: December 10, 2013
(case# 289055)
Hope this helps!