EFI (Big Sur?) for Thinkpad T470

Any1 who can upload EFI for Thinkpad T470? :)

Hardware:

• CPU: Intel Core i5-7300U
• GPU: Intel. HD Graphics 620
• RAM: 8GB
• Laptop Model: Lenovo T470
• Audio Codec: 29
• Ethernet Card: Intel Ethernet Connection I219-V
• Wi-Fi: Intel 8265