EX2100 Power button keep blinking RED

After I update to OS5, it request me to off power and restart my EX2100, after I restart my EX2100, the power button keep blinking in RED, and I cannot access to my dashboard anymore. (even I enter the “http://wdmycloudex2100/” into the web browser.

Hello,

Please refer to the following KBA article: http://support-en.wd.com/app/answers/detail/a_id/24755/