Hello I just purchased the Bose QC35 and it comes with firmware 1.06 Should I upgrade the firmware to 2.5.5? I remember reading about people trying to downgrade back to 1.06 with other bad firmware. Is 2.5.5 good? Is 2.5.5 the same sound signature as 1.06? Is the ANC any better or worse?
The noise canceling signature changed quite a bit and never got the same. In the old ones you almost feel "void" and "suction", in the newer firmware it still does a good job blocking the noise, but not as deep as it used to.