The firmware looks fine, one slight difference to stock I can’t explain in code areas:
Otherwise both NVRAM filled with a lot of a little ‘rare’ identical entries in the end, but nothing really obvious.
Try that file:
dell_5060-1_natbreg_ME.zip (9.3 MB)
That’s your firmware with a stock bios, DVAR block transfered (0x1081000, size 0x10000), ME clean / freshly initialized according to
After programming dump the chip again in a separate process, save the dumped content with another name, and compare it to the original file. They should be a 100% identical.
(If this works and in case you should have to work again on the firmware- it’s the folder with “2 CombineBiosName…”)