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Latitude E7270 Complete OpenCore EFI for Big Sur needed


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Hello everybody!
I've been trying to prepare my USB for installing Big Sur on my Dell Latitude E7270, and I've created a couple that booted onto the Recovery, I was able to erase the SSD, download via WiFi and when the PC reboots for Installer something fails and suddenly boots again to Recovery. It's driving me crazy, PLEASE HELP!!

Would anyone please share with me a zip containing a complete EFI folder for a Dell Latitude E7270 so that I can paste it on the EFI partition of the offline USB installer or the root of the online USB (next to the com.apple.recovery.boot)?
The specs are the following:
CPU: Intel Core i7 - 6600U 2.6 GHz (Skylake)
GPU: Intel HD Graphics 520
Network: Intel Ethernet Connection I219-LM
                Intel Dual Band Wireless-AC 8260
                Intel Bluetooth
Audio: Realtek ALC293

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Thank you very much!!! I deleted the Broadcom Kexts, added the Intel one both for Bluetooth and WiFi, and applied GENSMBIOS...Now my Hackintosh works great!
If anyone needs the EFI for Dell Latitude E7270 with Intel Bluetooth and WiFi, just let me know and I'll upload it!

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