Correct. Don’t forget about neoprogrammer. Read datasheet for the SPI chip, size shold fit, check voltage- there might be an 1.8v chip
Otherwise a dump can often be done by fpt from Intel ME tools - version corresponding to ME firmware version - if the system is still booting and you’re able to connect a bt or usb mouse and keyboard.
fptw64 -d spi.bin will dump the complete firmware, but there might be errors since ME region might be protected.
ME tools here, 1st post a little down:
Do you have a link to the update you installed?