QNAP has pulled a recently released firmware update after widespread customer reports that it's breaking connectivity and, in some cases, locking users out of their devices. [...]
source https://www.bleepingcomputer.com/news/technology/qnap-pulls-buggy-qts-firmware-causing-widespread-nas-issues/
source https://www.bleepingcomputer.com/news/technology/qnap-pulls-buggy-qts-firmware-causing-widespread-nas-issues/