USGFLEX 200 not rebooting after upgrade to 5.20(ABUI.0)

BigFish

My USGFLEX 200 was upgraded to 5.20(ABUI.0).  I rebooted the unit and now it wont boot back up.  The system LED is just flashing and never boots

Zyxel_Jeff

Hi @BigFish

Please refer to this tutorial to recover your device :

https://community.zyxel.com/en/discussion/12943/recovery-steps-for-usg-flex-atp-series-application-patrol-signature-issue#latest

If it still has a problem, please let us know.