Sony WH-1000XM3 - Noise canceling failing ?

[designalchemy]

Hi all,

when i bought my XM3's the noise canceling was amazing i couldn't hear anything, but iv noticed the last week or 2 they have been not so good, i can hear more background noise and its generally not as good.

Is there anyway i can fix this or have i broke them somehow ?

Thanks

Luke

[designalchemy]

Iv just found the threat about the firmware problem, i guess this is the issue ...

[SombreCornet]

I have the exact same Issue, When I got my headphones they came with firmware 2.0? The actual problem began after I updated mine to 4.1.1 The drop in performance for me went from not being able to hear a big 3.0 liter diesel engine while driving my van to now I can hear people making conversation which I couldn't hear when I got my headphones out of the box. 

This is an incredibly shambolic failure of the product. There is a thread about the firmware 4.1.1 and mine kicked the kerb after I upgraded and it appears Sony dont believe that there is an issue.