FreeNAS (GUI) Web-based upgrade from 8.3.0 Release to 8.3.1 Beta2
1. Back up the configuration “System → Settings → General → Save Config”
2. Download the *.txz file. Upload it through the GUI, Remember to specify the checksum.
3. Take about 5~10 minutes flashing the USB key, the machine reboots once, and I manually reboot it again
Old services are up and running after the upgrade. (Say the old config are good)