Yesterday evening I updated the firmware of my RT-AC56U router from Merlin 380.67_0 to 380.68_2. Unlike other times I updated the firmware, this time the router restarted slower than usual, flashing the power LED for some time in the beginning, and I also felt a "burnt electronics" smell in the area. After it finally booted I discovered that neither the USB HDD (on the USB3 port), nor the USB 3G modem (on the USB2 port) were being detected. Testing on other devices, the HDD seems to be fine...
RT-AC56U fried USB ports after firmware update
RT-AC56U fried USB ports after firmware update
