A motherboard that powers on, but doesn’t boot. This Framework 13 7640U motherboard was bricked through a “fwupdmgr update” that errored out until the battery died, leaving the UEFI in a broken state. The advice from framework made it seem like resetting the embedded controller would fix the problem, so when that didn’t work, I started my own troubleshooting with the EC (Embedded Controller). I accessed the EC through the JECDB header’s serial interface which Framework provides the pinout to find RX and TX....