RPI 4 unable to connect wifi 5ghz ac

hoangdinh86 · December 17, 2020 at 2:21 AM

My RPI 4 can not connect wireless 5ghz ac, Error: Failure or Network error. I tried with each channel or each region, 18.9 stable or newest nightly build. But when I use Raspbian with region US, It is good, connected 5ghz ac 433mbps. Could you add new driver for CYW43455 . I used New WiFi clm_blob file for CYW43455 (3B+, 4B and CM4) - Raspberry Pi Forums for Raspbian and it's so good, fast and stable. Thanks

**mglae** · December 17, 2020 at 3:49 PM

Put the new firmware into /storage/.config/firmware/brcm

mrtrev · December 17, 2020 at 8:07 PM

Mine doesn't seem to notice the file there.

Code

LibreELEC:~/.config/firmware/brcm # ls
brcmfmac43455-sdio.clm_blob

hoangdinh86 · December 18, 2020 at 5:30 AM

Quote from mglae

Put the new firmware into /storage/.config/firmware/brcm

Quote from mrtrev
Mine doesn't seem to notice the file there.
Code
LibreELEC:~/.config/firmware/brcm # ls
brcmfmac43455-sdio.clm_blob

Thank so much

**chewitt** · December 18, 2020 at 5:38 AM Official Post

Put the matching brcmfmac43455-sdio.bin file in the same folder. You also have to reboot for the files to be overlaid on the existing ones.

marantz · January 1, 2021 at 7:31 PM

is this included in nighly builds by default?

**HiassofT** · January 1, 2021 at 8:42 PM

Yes, nightly builds have up-to-date firmwares.

so long,

Hias