Hi there... I have a E7440 (edit: with the i7-4600U and a DW1510 wifi card). I have run Mojave and Catalina on it for almost 2 years. Now I am trying to install Big Sur 11.6.7. I have a MacBook Air, which I used to download the Big Sur 11.6.7 Full Installer, and to create the USB boot stick. I downloaded JakeLo's OpenCore EFI's, installed them on the USB stick, and made the requisite edits to the serial number, etc, as instructed.
My USB stick boots fine, I select "Install Big Sur", but the process hangs with the progress bar about 50-60%. I enabled verbose mode, and it appears that the boot is sticking at the "apfs_module_start" step. I get the same error, regardless of the OpenCore version of the EFI (0.8, 0.78, 0.74, etc).
My initial thought was maybe the APFS version changed in Big Sur 11.6.7.... so I downloaded the Full Installer for Big Sur 11.5.2 instead... but I'm getting the same issue...
I'm not sure how to troubleshoot this... Thanks in advance.