sudo sh -c 'echo -1 > /sys/module/usbcore/parameters/autosuspend'
Use a dedicated power supply for the Exynos device (not just USB power). For Odroid XU4, use the 5V/4A barrel jack. For Galaxy phones in download mode, ensure the battery is at least 30% charged or use a “download mode jig” with external power. exynos usb device4000 hot
Permanent damage to the lithium-ion cells. sudo sh -c 'echo -1 >