https://support.ruckuswireless.com/pr...
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From the upgrade release notes:
9) Symptom: During the upgrade, the device may appear un-responsive after
the system restart. LED’s are off. Workaround:
a. If, after waiting at least 25minutes the ZoneDirector has still not
redirected you to the login page, check the Status LED on the front
of the unit. If the Status LED is green click on the link on the upgrade
page. which will take you to the log in page.
• Congratulations you are finished with the upgrade procedure!
b. If the Status LED is off, red or flashing red power-cycle the unit by
unplugging the power adaptor from the rear of the unit. Wait 10 seconds,
then plug it back in. The ZoneDirector will boot, but will NOT be
upgraded.
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Was it a "b" scenario?