Here is my UART output:

U-Boot SPL 2014.04-00014-g47880f5 (Apr 22 2014 - 13:23:54)
Could not probe the EEPROM; something fundamentally wrong on the I2C bus.
Could not get board ID.
Could not probe the EEPROM; something fundamentally wrong on the I2C bus.
Could not get board ID.
Unknown board, cannot configure pinmux.### ERROR ### Please RESET the board
###


On reset, the same message repeats. I'll probe the I2C bus and see what I
can find.

Bryan


On Sun, Nov 29, 2015 at 10:40 PM, William Hermans <[email protected]> wrote:

> Make sure your serial adapter is 3v3 ttl.
>
> On Sun, Nov 29, 2015 at 11:16 PM, Bryan Hood <[email protected]>
> wrote:
>
>> Hi William,
>>
>> I tried flashing the eMMC as you suggested, but no luck. The LEDs never
>> turned on, so I just waited a very long time. I'll work on getting the
>> serial output next.
>>
>> Thanks,
>>
>> Bryan
>>
>> On Sun, Nov 29, 2015 at 7:44 PM, William Hermans <[email protected]>
>> wrote:
>>
>>> Using a serial debug cable will give you a better idea of what's going
>>> on. It will not always let you know exactly what the problem is, but based
>>> on what you  get as output, someone here could give you a better idea
>>> what's happening.
>>>
>>> Passed that . . .  try flashing this to sdcard, and booting from it.
>>>
>>>
>>> http://debian.beagleboard.org/images/bone-debian-7.5-2014-05-14-2gb.img.xz
>>>
>>> This is an older image, and I have a good reason as to why you should
>>> attempt booting from this. Older eMMC images can interfere with newer
>>> sdcard images at boot. This should give you( us ) a better idea what is
>>> going on. Typically though, with an older 1st, and 2nd stage boot loader,
>>> if you press and hold the boot button at boot. the board should be forced
>>> to boot from, and use the 1st, and 2nd stage bootloader from the sd card,
>>> instead of attempting to use the boot loaders from the eMC . . .
>>>
>>> On Sun, Nov 29, 2015 at 7:45 PM, Bryan Hood <[email protected]>
>>> wrote:
>>>
>>>> I've got a beagle bone black that used to have debian on it, but it's
>>>> been sitting on my desk unpowered for over a year. I recently tried booting
>>>> it, but the user LEDs won't turn on; only the power LED will light up. I
>>>> tried programming the on board flash, and booting from a microSD card, but
>>>> no luck. Any suggestions? I've got tools at work to probe the debug header,
>>>> but I'm hoping it doesn't come to that. Thanks!
>>>>
>>>> --
>>>> For more options, visit http://beagleboard.org/discuss
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>>>
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>>
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>
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