I have found that the Sandisk USB disks will fail, especially under low voltage conditions (underpowered adapter, for example).

Alistair gave me instructions when mine failed.

     - Power off the RIPE Atlas Probe
     - Remove the USB stick
     - Power on the tp-link and connect it to the network
     - Wait for 5 minutes
     - Insert the USB stick while the RIPE Atlas Probe is powered.

If that doesn't work, try a new 4GB USB drive instead.

SanDisk was good about replacing the failed USB drive, but I think I'd use a different brand than can tolerate lower power.

On Fri, Dec 5, 2014 at 3:11 PM, Florian Streibelt <florian@inet.tu-berlin.de> wrote:
Hi,

I got a probe returned that was not able to connect to the Atlas
network. The probe was doint nothing for 2 days, only the leftmost LED
(Power) was on, nothing else seems to happen.

I also had to learn, that after the probe was not working, the user
cleared the USB-Stick.

Is there a way to resurrect the probe? Also the probe should be re-added
to my ambassador account, if possible.

Greetings,
  Florian

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