I have faced similar error messages when the NVRAM file is incorrect.
Do the following three files exist?
Yes the files were present, but there was wrong configuration in the NVRAM file(/lib/firmware/brcm/brcmfmac43430-sdio.txt) related to the frequecny(XTAL) so that i changed the value lesser that 50MHz then it was working fine.
Now i moved to next step, i'm trying to interact with connman wifi technologies.
Any idea, what is the purpose of LPO_IN pin oscillator(32.768KHz)? Is that mandatory for 1FX module(or anyother murata series)? If that is not present, what will be a feedback?
As I know, HT Avail timeout issue occurred if LPO set wrong.
Each chipset has a different boardflag3 value. Anyway, I think you have to check boardflag3 value in nvram.
LPO_IN crystal clock oscillator(32.768KHz) is mandatory, it is used mainly for sleep mode.