MBP A1502 EMC 2875 corrupted EFI

Hi all! My problem is that I was stupid and ignorant enough to plug Clover USB to real Mac and it corrupted the EFI. I ordered an EFI Card from Macunlocks and now I am at the situation where i can boot to Mac OS using EFI shell USB and manually calling boot.efi. Without the EFI chip there is a bootloop with endelessly repeating startup chime.

Question is can I make a manual firmware update with this setup from running OS to fix the original EFI chip or would I need some additional equipment?

Thanks in advance!