Max.1974 Posted November 22, 2020 Share Posted November 22, 2020 Hi @jpressinger, Here the EFI Opencore for Big Sur. Hope help you and others! EFI LENOVO BIG SUR E470 MAX.1974.zip NB: im test everithing and also works fine in High Sierra (final) and Catalina!!! Quote Link to comment Share on other sites More sharing options...
zmvlakjfdsa Posted February 7 Share Posted February 7 @Max.1974 thanks for the EFI, I was able to install Big Sur 11.2 on my E470. But I don't have Bluetooth and no sound (I can see microphone input level changes when I speak, but no audio out). Could you please help. My EFI is attached. I only include OpenCore in the EFI for small size. EFI.zip Quote Link to comment Share on other sites More sharing options...
Moderators Jake Lo Posted February 8 Moderators Share Posted February 8 @zmvlakjfdsa what wifi/BT combo does it have? Quote Link to comment Share on other sites More sharing options...
zmvlakjfdsa Posted February 8 Share Posted February 8 WIfi: Qualcomm Atheros QCA9377. I have no wifi which is expected, but I don't have bluetooth which is weird. Audio: Conexant CX20753/4. I can see audio input level changes when I speak, but there is no sound out. Quote Link to comment Share on other sites More sharing options...
Administrators Hervé Posted February 8 Administrators Share Posted February 8 Nothing weird with having no Bluetooth working if that's what you meant. Would be a Qualcomm Atheros module too and those were also finicky when not plain unsupported. https://wikidevi.wi-cat.ru/Qualcomm_Atheros_QCNFA435 Replace that unsupported QCA card by a supported Broadcom model. 1 Quote Link to comment Share on other sites More sharing options...
ohr Posted February 9 Share Posted February 9 @Max.1974 Thank you very much for your EFI, but the computer cannot wake up after sleep Quote Link to comment Share on other sites More sharing options...
Administrators Hervé Posted February 9 Administrators Share Posted February 9 https://osxlatitude.com/forums/topic/9966-how-do-i-disable-hibernation-for-sleep/?tab=comments#comment-71887 1 Quote Link to comment Share on other sites More sharing options...
ohr Posted February 11 Share Posted February 11 Is there a microphone driver or microphone EFI for Lenovo E470 opencore? Quote Link to comment Share on other sites More sharing options...
Administrators Hervé Posted February 11 Administrators Share Posted February 11 2 x comments: Microphone is under the control of the audio driver, whether you use AppleALC (which works with AppleHDA) or VoodooHDA (which disables AppleHDA). Then, it's down to a matter of the kexts having the correct definitions for the Codec. No such thing as a "microphone EFI". Please search the forum before posting as your issue has already been reported and addressed here. 1 Quote Link to comment Share on other sites More sharing options...
Max.1974 Posted February 14 Author Share Posted February 14 Thanks @Hervé and @Jake Lo to help people. Sorry late answer, because im not receive any notifications about this post. On 2/11/2021 at 6:46 AM, ohr said: Is there a microphone driver or microphone EFI for Lenovo E470 opencore? My microfone works nice, its necessary know how is your codec and modified in Nvram alcid=X (number of your codec). On 2/9/2021 at 12:41 AM, zmvlakjfdsa said: WIfi: Qualcomm Atheros QCA9377. I have no wifi which is expected, but I don't have bluetooth which is weird. Audio: Conexant CX20753/4. I can see audio input level changes when I speak, but there is no sound out. Sorry im not said because my post was moved to this page, in context im use Broadcom Wifi BT card. In this post from insanelymac im report my card, but using Clover. Works with OC too. https://www.insanelymac.com/forum/topic/346264-success-lenovo-thinkpad-e470-kaby-lake-r-intel-i5-7200u-macos-big-sur-with-clover-r5127/?tab=comments#comment-2748176 Quote Link to comment Share on other sites More sharing options...
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