plexjellyfin wrote: ↑22 Jul 2026, 19:55
Model: TerraMaster F6-424 Max
TOS Version: 7.0.0791 (x86)
Immediately after upgrading to TOS 7.0.0791, my NAS became unstable. Before the update, it was operating normally.
The NAS boots successfully and works normally for several minutes, then becomes completely unreachable.
Symptoms:
* TOS web interface stops responding.
* SMB shares become unavailable.
* TNAS Desktop reports the NAS offline.
* The NAS eventually stops responding to network pings.
* Recovery requires a forced power cycle.
Immediately after the update I also received the notification that shared folder permission conversion had started and that shared folders might be inaccessible until the conversion completed. I’m not sure if that process ever finished successfully.
Troubleshooting already performed:
* Multiple reboots and power cycles.
* Switched Ethernet ports and cables.
* Verified DHCP network configuration.
* Tested using both hostname and IP address.
* Tested from multiple browsers.
To troubleshoot, I continuously monitored both network connectivity and the TOS web interface.
The failure sequence is always the same:
1. The NAS boots normally.
2. Network connectivity is normal.
3. The TOS web interface responds normally.
4. After several minutes, the web interface begins failing.
5. Shortly afterward, the web interface becomes unreachable.
6. Finally, the NAS stops responding to network pings and all services become unavailable.
This happens even when the NAS is left completely idle after boot with no user interaction.
Has anyone else experienced this on TOS 7.0.0791 with the F6-424 Max?
Is this a known issue, and are there any recommended diagnostic steps before attempting a TOS recovery or reinstall?