Quote from: powaking on November 26, 2017, 07:03:09 PM
Similar issue. Been working fine then just the other day no dial tone. Tried resetting which worked and brought be back to 3.1.1. Then it said there was a new update. Pressed the triangle and now back to not working. Power it on and the power light is on solid for a few seconds, starts to flash then power light goes out. Unable to reset it. What I have tried:
Reset pin>plugged in power>lights flash quickly>lights go out and back on>flashes>goes out>release pin
Reset pin>plugged in power>lights flash quickly>release pin>lights go out and back on>flashes>goes out
Tried the above with a different power supply that provides 12v. No difference. I feel like Obihai pushed out an update which I clearly did not need and then bricked my device. Its no longer under warranty but now am forced to purchase another one.
To be very clear: are you saying that now, after you have performed the factory reset, and you power off and then power on the device, and just let it sit there, that
all three of the LEDs are off (none are blinking)? If that's the case, then you have a hardware failure. A failed firmware download can't do that. The expected behavior after a failed firmware installation is that the left-most (power) LED is alternatively-blinking red and green. The hardware has just enough "smarts" to start up and put itself in recovery mode, even if the firmware load is bad.
If you have the red/green blinking LED, you can recover from it. If no LEDs are lit, then your device is dead, or it's power adapter is dead. You can try swapping a different power adapter, if you have a 12VDC "wall wart power adapter with the same "barrel" connector.