Issue description

TS-x31P/x31+ running QTS prior to build 20190328 will fail to upgrade to QTS 4.4.1 with the following system log Failed to update system. A flash read/write error occurred. Error code: FW004. 

Please run following procedures to resolve this issue. 

Applied model


The Procedure

1. Download the latest QTS firmware from following link below or later version

2. Manually Upgrade TS-x31P/x31+ by web interface with above file.

3. After NAS reboots, run Live update to upgrade the firmware to 4.4.1  again.