I am in the same boat. In my case, I was following the instructions on the 
Adafruit site for installing a driver that works with their WiFi USB 
dongle. I was ssh'd into the BBB via ethernet and the power was from a 2A 
USB power brick. (So no access via the USB port.) The instructions reach 
the point of inserting the WiFI dongle, then rebooting. When it rebooted, I 
could not get in via ssh over the ethernet and had no other access to the 
board. I eventually bailed and pulled the power. I then move over to my 
bench with a HDMI monitor/keyboard/mouse and booted up there. At that 
point, the BBB booted, but got stuck at a screen selecting a choice of 
logins (which I can't remember at the moment)  + "other". That last option 
would allow root for the name, but when I attempted to "skip" the password 
prompt, it just indicated that authorization failed. Same reaction for the 
two other names I could log into. In past experience, this usually means 
the password files have been corrupted. So, I am starting the reflash 
process. Unfortunately, I get the same thing, it wants to boot to a login 
prompt and does not enter the flash phase. I am going to completely 
reformat the SD card (a 16GB Sandisk Ultra class 10), then copy the image 
again. 

If this does not work, I will just install the Cloud9 image on the SD card 
and boot off of that.

On Friday, December 13, 2013 5:47:23 PM UTC-7, [email protected] wrote:
>
> Greetings,
>
> I have a Beagle Bone Black (BBB) that I somehow managed to brick and I 
> have been following the instructions on these two sites to try and re-flash 
> the image:
> http://elinux.org/Beagleboard:Updating_The_Software
>
> http://learn.adafruit.com/beaglebone-black-installing-operating-systems/overview
>
> I am using a Windows 64-bit PC to connect to the BBB and I am using the 
> image titled "BBB-eMMC-flasher-2013.09.04.img.xz" which I downloaded from 
> here: http://beagleboard.org/latest-images/
>
> I have tried multiple times to re-flash my BBB but so far nothing seems to 
> work. I am following the directions which are to 1) put image on sdcard, 2) 
> put sdcard in slot, 3) hold down user boot button, and 4) turn on BBB by 
> plugging in a 5V power brick, 5) release user boot button when all 4 LEDs 
> are on. Every time I do this, I told the user boot button down until all 4 
> LEDs light up solid and then start flashing, at which point I release the 
> button. I wait 45-60+ minutes (one time I let it go overnight) but at no 
> point do I end up with an indication that the re-flash is complete (i.e. 
> all 4 LEDs lit up solid). During the re-flash process (or what I assume is 
> the re-flash process), the LED's look like this:
> LED 0 - heartbeat, which indicates system is running
> LED 1 - Nothing. This corresponds to access of the microSD card
> LED 2 - Blinking. This corresponds to an active CPU. 
> LED 3 - Nothing. This corresponds to access of on-board memory
>
> I have tried plugging in an HDMI cable so that I can view what is 
> happening during the re-flashing process. Upon bootup, the monitor shows a 
> BeagleBone flash screen followed by a login screen. By using a 
> USB-connected keyboard I can log in as "root". It does not ask for my 
> password even though I had created a password for my pre-bricked BBB. Once 
> logged in I can navigate through different directories, manually turn 
> on/off LEDs, etc. Note that the login screen only appears if I have an 
> sdcard in the BBB. Without the sdcard, the BBB will have the power LED on, 
> but will not respond, nor will it connect to PC, nor will any of the other 
> LEDs come on. Also note that it does not appear to matter if I press the 
> user boot button or not... the BBB seems to always boot from the sdcard if 
> it is plugged in. 
>
> I'm at the point where I am about ready to throw away this BBB and buy 
> another. However, I would prefer to solve this mystery if possible. Any 
> suggestions would be most welcome. If you have any follow-up questions I'd 
> be happy to answer them.
>
> thanks!
> Mike
>
>

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