Replacing EC Firmware - ISpillMyDrink/UEFI-Repair-Guide GitHub Wiki
Sometimes it is necessary to only replace the EC section of an image. That is mostly necessary when some sort of EC firmware corruption keeps the system from powering up, or there is another problem that requires the EC firmware to be replaced while the latest BIOS version is already installed, preventing the use of the latest firmware update.
Replacing the EC section is as straightforward as opening up the image with UEFITool (OE), selecting the appropriate Padding section or EC Region and replacing it as is with the known working one we extracted in 6.1.