For fully bricked units (no ping, no web, no recovery mode):
For users without a professional box, "dead flashing" methods often involve specific utility software: e1200m flash file install
Method C — Serial + bootloader (advanced / recovery) Informative Paper: E1200M Flash File Installation Guide
If you followed this entire guide, your e1200m should now boot to the setup wizard, fresh as the day it left the factory. System Tools → Firmware Upgrade or Management →