irdo38

Hello, I have big problem with every macOS on my Dell E5420, only one OSx i can install is yosemite, i've tired every EFI i found in internet for my laptop and all for nothing, i can boot only yosemite, so im looking for a EFI folder that will help me install sierra or high sierra on my laptop spec: Dell e5420 i5 2540m 4gb ddr3 1333mhz intel hd3000 ssd 512gb my current efi here: https://www.mediafire.com/file/he8s1tmreu92lbt/EFI.zip/file thanks in advance for every help