WiFi on RPI4 - still unconfigured in 2026?

Hi,

I'm quoting a posting on this list from 2022:

 >> mayuresh%acm.org@localhost (Mayuresh) writes:
 >>    bwfm0: Found NVRAM file: brcmfmac43455-sdio.Raspberry Pi 4 Model 
B.txt
 >>08 Aug image:
 >>    bwfm0: autoconfiguration error: NVRAM file not available
 >
 > There is a file
 >
 > /libdata/firmware/if_bwfm/brcmfmac43455-sdio.raspberrypi,4-model-b.txt
 >
 > create a symlink "brcmfmac43455-sdio.Raspberry Pi 4 Model B.txt" to
 > that file so that it is found also with the different name.

This is still necessary? I got the same autoconfiguration error after 
installing the 10.1 release image together with UEFI.

After I added the link to "brcmfmac43455-sdio.Raspberry Pi 4 Model 
B.txt", the missing NVRAM file was found, and I also saw the message 
"CHIPACTIVE". But afterwards, shortly after going multiuser, the system 
hard-resets and corrupts the file system.

It never did that before, so it is very likely a result of the WiFi chip 
activation. Is there any chance to run RPi4/UEFI with wireless network?

Regards,

-- 
Frank Wille