Wlan0 disappeared

#1

Hi,

I ran a
sudo apt remove network-manager
on my rockpi4B.

I have since reinstalled it, but my wlan has totally disappeared from the picture. ip a, config tools etc, all just show eth0.

How can I recover my wlan0?

Many thanks

#2

Hi

Anyone? Any ideas on how to recover wlan0 on rock pi?

Thanks

#3

$ dmesg | grep brc
[ 22.635814] brcmfmac: F1 signature read @0x18000000=0x15294345
[ 22.644723] brcmfmac: brcmf_fw_alloc_request: using brcm/brcmfmac43456-sdio for chip BCM4345/9
[ 22.648724] brcmfmac mmc2:0001:1: Direct firmware load for brcm/brcmfmac43456-sdio.radxa,rockpi4b.bin failed with error -2
[ 22.649813] brcmfmac mmc2:0001:1: Direct firmware load for brcm/brcmfmac43456-sdio.radxa,rockpi4b.txt failed with error -2
[ 22.649881] brcmfmac mmc2:0001:1: Direct firmware load for brcm/brcmfmac43456-sdio.txt failed with error -2
[ 22.684259] usbcore: registered new interface driver brcmfmac
[ 23.680047] brcmfmac: brcmf_sdio_htclk: HT Avail timeout (1000000): clkctl 0x50

How to reinstall the firmware without doing a full OS restoration?