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    RT-AC68U will only boot with jtag cable attached.

    The serial port allows you to send interactive keyboard commands just like you can with SSH or Telnet. There is a point in the boot process which briefly waits for the enter key to be pressed. If it is, the boot process stops and waits for more input. That's where mine was stopping. If you press...
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    RT-AC68U will only boot with jtag cable attached.

    Great its running fine now. One change though in case anyone else ever tries this. I had to move the pull down resistor to TX and GND or else the router would boot but had no internet access. Thanks for your help!!
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    RT-AC68U will only boot with jtag cable attached.

    No serial communication at all when it freezes. But I think I know what the problem is. I think the serial port is picking up stray inputs. I set a timer on my phone and started connecting the serial cable at various intervals to see where the problem started. I started out a t 10 seconds and...
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    RT-AC68U will only boot with jtag cable attached.

    Tried that too. Got no serial output at all when it wouldn't boot but I did not try sending a command (don't know what I was thinking). I will try a dmesg dump shortly.
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    RT-AC68U will only boot with jtag cable attached.

    Tried that many times. Same results. Its definitely very strange. I also tried another power supply.
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    RT-AC68U will only boot with jtag cable attached.

    This is a CellSpot router that has been converted. I have verified and re-flashed the cfe and tried Asus stock firmware, Asuswrt-Merlin, Tomato, and DD-WRT. Without a jtag cable attached it appears to boot normally. All LEDs are lit and the switch works for lan comunication between wired PCs...
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