You need to use the flash tool to make a back-up of your current BIOS. Then upload it somewhere and put a link here. I will mod the original from your PC. Or give me a link to a BIOS from your PC Model the one you gave me was for the ASUS Z96S, which is what I modded. You might have a motherboard that was built for a specific manufacturer (like Dell or HP) and if so you need to link to the BIOS on their website.
Did you use the new Slic Dump 2.0 Advanced tab to make sure that the Dell Cert is recognized ? Or You could use the old Lenovo key.
I just used the Slic DumpTool kit - it showed: Dump OK ! ( DELLQA09_V2.1 ) - Which one is the Old Lenovo Key?
Lenovo is the one that starts with 22TKD- Dell starts with 342DG- Also if you used a loader on that system you need to be sure it is completely uninstalled. If you used the Orbit30 v1.8 toolkit you need to do a fresh install or it won't activate correctly.