modify file pwds.da0

Dear,
In order to deploy the Digi Transport units, I want modify manually the WPA shared key in the file pwds.da0.
There’s any possibility to do this.
The WPA key should be different in each unit.
Thank you for your help.
best regards
Hamid

You could put a python script on the device that dynamically creates it based on certain values in the device such as serial number. Apart from that it would really depend how you are configuring these devices for deployment.