(Fix)Corrupted rtw8852c_fw.bin breaks WiFi on Realtek RTL8852CE (Hp probook 440 g10)

Support & help
1

FydeOS iris v22.1 (kernel 6.6.99) has a corrupted rtw89/rtw8852c_fw.bin firmware file.

On HP ProBook 440 G10 with Realtek RTL8852CE (10ec:c852), the rtw89_8852ce driver loads (“attach allowed”) but no wlan0 interface appears.

Running file rtw8852c_fw.bin shows “HTML document” instead of “data” — it’s 10 MB of HTML garbage instead of ~1.5 MB of real firmware.

Audio also may not work (atleast it didnt for me) until this firmware is replaced.

Fix: Replace lib/firmware/rtw89/rtw8852c_fw.bin with the correct file from https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git

This likely affects all variants with Realtek RTL8852CE.

2

It may not necessarily be a corrupted firmware file. From what I’ve seen, this kind of issue is fairly common in the Linux community, especially with Realtek RTL8852CE adapters.

In many cases, the problem is actually a compatibility issue between the firmware version and the rtw89 driver rather than the firmware file itself being damaged. There have been numerous reports where newer firmware versions could not be properly parsed by older rtw89 drivers, resulting in firmware loading errors or missing Wi-Fi interfaces.