here is my EFI: https://drive.google.com/file/d/1523Pp2S-PZEdIMzqGakQOc3xrY2AQcNv/view?usp=sharing
i can upgrade to 10.13.3 with this EFI but my system won't boot when i upgrade to latest 10.13.5. thanks in advance
On my Dell E6540, I've installed IO80211Family.kext and rebuild kextcache, wifi can turn on and off but cannot scan wifi. now im using mac os sierra 10.12.6, wifi card is DW1397 (Broadcom BCM4312)