diff -Nru linux-firmware-20210208/brcm.orig/brcmfmac43455-sdio.raspberrypi,4-model-b.txt linux-firmware-20210208/brcm/brcmfmac43455-sdio.raspberrypi,4-model-b.txt
--- linux-firmware-20210208/brcm.orig/brcmfmac43455-sdio.raspberrypi,4-model-b.txt	2021-03-03 12:07:48.052343006 +0000
+++ linux-firmware-20210208/brcm/brcmfmac43455-sdio.raspberrypi,4-model-b.txt	2021-03-03 12:08:16.307867170 +0000
@@ -7,7 +7,7 @@
 AvVmid_c0=1,165,2,100,2,100,2,100,2,100
 boardflags=0x00480201
 boardflags2=0x40800000
-boardflags3=0x48200100
+boardflags3=0x44200100
 boardrev=0x1304
 boardtype=0x6e4
 btc_mode=1