What to do when selling or buying a used Firewalla?

Note: if you bought firewalla from someone other than from firewalla.com, brookstone.com, newegg.com where the vendor is Firewalla LLC.   Just pretend you got a used Firewalla. (Yes, we are security people ... ) 

If you plan to sell Firewalla, please do the following:

1. Goto settings and advanced and reset to factory default.
2. Please follow this and flash the card.  If you have a 16GB, make sure you flash it 3 or more times.  This will ensure all the sectors are clean. https://help.firewalla.com/hc/en-us/articles/115004796633-Flashing-Image  

(why flash 3 times, this will ensure all sectors on the SDCard are covered, including the reserve ones)  There may be other programs that do the same.  This step will ensure the data stored on the box is wiped.

If you bought a used Firewalla, Please do the following

1. Please do not just plug firewalla in! 
2. Follow directions here and https://help.firewalla.com/hc/en-us/articles/115004796633-Flashing-Image   

Side note on the license:

The firewalla license is a huge long number, and it is the key to identify the device as well as the capabilities of the device.  Without this number, the firewalla cloud will not allow the device to be connected.  

This number, in combination with another key on the Firewalla box, will form a unique binding key, which means only your phone can talk to it. 

This number is unique and like any license number, please don't lose it or share it. 

The license is one per firewalla box.  If it is bound for some reason to multiple boxes,  the binding will be successful, but ... the earlier instances will then turn into developer machines.  Developer machines will be talking to the developer cloud, which may not be stable.  Developer machines will also send debug logs to the cloud.   We made this a feature, in case people want to be a developer.

If the license is overused, it can be shut down on the cloud side. (banned forever)