EdgeOSv1.10.6 – EdgeMax (EdgeRouter) no disk space on router

• SSH into your router
• run the following commands to display diskspace and diskspace taken by the firmware

sudo df -h
show system image storage

• delete backup images, answer yes to continue

delete system image

https://help.ubnt.com/hc/en-us/articles/205146110-EdgeRouter-Upgrading-EdgeOS-firmware