Put SD on device, push reset button, power device with USB from computer, waited for the leds going up and down… and after some minutes/hours the pattern changes and the four leds start to flash at the same time, but the board never shuts down by itself.
If I shut down and try to connect with ssh debian@192.168.7.2 it shows time out after some time.
a repeating 4 ON and 4 OFF is a flashing failure… I noticed you said “power device with USB from computer” Please use a phone charger or a real 5 VDC power connector when flashing… Mostly likely the board is starved for power…