Get the bios file from Dell, extract it with AMIUCP or AMI_UCP_Extract, identify the corrupted volumes and replace it on your dump.
If the ME needs initialization, use the guide and ME v16.1 tools, these packages are scattered around the thread as also the required FW images 16.1.25.1917 Consumer H or above.
EDIT: By your words seems you all did a ME clean or some sort of… users tend to omite small details to not get embarrassed or just cant explain the details of what was done, that’s not going to recover an interrupted AC bios update failure, the corruption is on main bios structure for sure.
You can wait for a time spare user to do ti for you, anyway my contribution is done, all the besta and good luck.