Unable to connect to higher wifi channels with Broadcom BCM4360

[Simon Brandmair <sbrandmair@gmx.net>]

Hi everyone,

I have a Broadcom BCM4360 wireless card (Archer T8E), which uses the wl
module (version 6.30.223.248 on jessie). I am unable to connect to
channel 100 or higher on the 5GHz band.

The problem seems to be: `iwlist wlan0 chan` returns:
   wlan0     32 channels in total; available frequencies :
          Channel 01 : 2.412 GHz
	  [snip]
          Channel 64 : 5.32 GHz
          Channel 66 : 5.33 GHz
          Channel 68 : 5.34 GHz
          Channel 96 : 5.48 GHz
          Current Frequency:5.22 GHz (Channel 44)

`iw reg get` gives me:
  country DE: DFS-ETSI
        (2400 - 2483 @ 40), (N/A, 20), (N/A)
        (5150 - 5250 @ 80), (N/A, 20), (N/A), NO-OUTDOOR
        (5250 - 5350 @ 80), (N/A, 20), (0 ms), NO-OUTDOOR, DFS
        (5470 - 5725 @ 160), (N/A, 26), (0 ms), DFS
        (57000 - 66000 @ 2160), (N/A, 40), (N/A)

Am I missing something or is the card and the module just not supporting
higher channels?
I would be thankful for any pointers.

Cheers,
Simon