The following describes how to update the jms561 firmware under windows.
Updating the firmware in windows has the great advantage of having two different serial numbers.
The different serial numbers can solve the problem of only two drives showing up in the OMV5.
0. Preparatory work
You need to prepare an A-A cable and use it to connect Quad SATA Hat to your Windows PC.
Note that you need to supply power to Quad SATA Hat.
1. Download Jms561-mptool.zip and unzip it.
2. Launch MP Tool
3. Check “RD Version” and load firmware
4. Start MP process
5. Safe remove
6. Connect another USB port and upgrade the firmware
7. Remove power