Iridium Thanks for your prompt answer, I'll try it later definitely (need to get spare SD). Official alpha uses another firmware, am I getting this right?
LibreELEC:~ # dmesg | grep brcmfmac
[ 5.942741] brcmfmac: F1 signature read @0x18000000=0x15264345
[ 5.948278] brcmfmac: brcmf_fw_alloc_request: using brcm/brcmfmac43455-sdio for chip BCM4345/6
[ 5.950248] usbcore: registered new interface driver brcmfmac
[ 6.447954] brcmfmac: brcmf_fw_alloc_request: using brcm/brcmfmac43455-sdio for chip BCM4345/6
[ 6.461827] brcmfmac: brcmf_c_preinit_dcmds: Firmware: BCM4345/6 wl0: Feb 27 2018 03:15:32 version 7.45.154 (r684107 CY) FWID 01-4fbe0b04
[ 6.534961] brcmfmac: power management disabled
To clarify, I'm not trying to get stable device. I'd like to help ironing out bugs of cutting edge releases.