ronald77 Posted December 18, 2020 Author Share Posted December 18, 2020 Okay, so I downloaded Jake Lo's link: (https://osxlatitude.com/forums/topic/8514-dell-latitude-e7450-uefi-only-clover-and-opencore/?do=findComment&comment=104253) I changed the EFI folder, booted in Catalina, no problem. Upgraded to Big Sur, no problem. But when I reboot, there's problems. I don't have enough knowledge of this, so I attached a couple of files. Would you take a look at those? Archief.zip Link to comment Share on other sites More sharing options...
Moderators Jake Lo Posted December 18, 2020 Moderators Share Posted December 18, 2020 Seems to be a Broadcom wifi driver error. What wifi device does your system have? Link to comment Share on other sites More sharing options...
ronald77 Posted December 18, 2020 Author Share Posted December 18, 2020 @Jake Lodoes this picture help? Link to comment Share on other sites More sharing options...
Administrators Hervé Posted December 18, 2020 Administrators Share Posted December 18, 2020 Congratulations. Now read what's written on the label (concentrate your attention on the top right corner) and head over to our Technical Info->Wifi forum section. Thank you. Link to comment Share on other sites More sharing options...
ronald77 Posted December 18, 2020 Author Share Posted December 18, 2020 I'm sorry. I tried to find some info, apparently that wifi card isn't supported. Bluetooth works though. So I removed the FakePCIID_Broadcom_WiFi.kext, I figured that could be a problem. Then, because I had a TP-Link WN725N, I installed this: https://github.com/chris1111/Wireless-USB-OC-Big-Sur-Adapter I went into the OpenCore config file > NVRAM > 7C436110-AB2A-4BBB-A880-FE41995C9F82 > and changed csr-active-config to FF0F0000 to disable SIP. After a reboot it seems it's changed back to 00000000 . The installed app says 'usb wifi not connected' (tried multiple USB ports). When I reboot it boots 4 to 5 times to get into Big Sur. So, do I need to replace the wifi card? And would that resolve the booting issues? Thanks! Link to comment Share on other sites More sharing options...
Moderators Jake Lo Posted December 18, 2020 Moderators Share Posted December 18, 2020 Disable all that include BRCM* in it. According the compatibility list, 7265 is supported. See here To disable SIP, you need to boot to recovery mode, disable SIP, boot to normal mode. Do the installation, reboot to recovery mode to re-enable SIP. Link to comment Share on other sites More sharing options...
ronald77 Posted December 19, 2020 Author Share Posted December 19, 2020 So, I tried some different things; removing all BRCM kexts, trying to get the 7265 to work, I'm in way over my head. So I'll return to the clover/catalina configuration that works for my machine. Thanks to all for the help and pointing into the right directions, I really appreciated that! Link to comment Share on other sites More sharing options...
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