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Hello all, Sorry my English, I have HP elitebook 840 G3 with i7-6500, 24 gb 2133 mhz ram 500 gb 850 evo M.2 ssd drive, dw1820a wifi-bt, latest BIOS. I installed Catalina without problem (first disabled wifi in bios). I used @Hervé trick for enable the wifi. I didnt install any extra kexts and i m booting with usb flash. Wifi seems works, but after 5-10 minutes later system is freezing. If i disable wifi, system looks working normally. Am i making a mistake somewhere? (root/Pci path?) My brother have Latitude 7490 and it has same problem (unsolwed). By the way 2 of wifi card have same MAC in laptop and label (i think they are not fake) PS: I wanted to use debug file but always failed ( /usr/bin/gen_debug write protected and sip disabled). so i attached my ioreg and clover config.plist. Thank you very much for your help. ioreg_config_plist.zip