Wd ex2ultra 5.31.108 problem with transmission - cant add .torrent file bigger than 100KB

After the recent firmware update 5.31.108 for the WD My Cloud EX2 Ultra, many users have reported issues with the built-in Transmission client. One of the most frustrating problems is that Transmission refuses to load or process .torrent files larger than 100KB. This issue has disrupted workflows for users who depend on Transmission for private tracker downloads or larger data sets. Let’s explore what’s going on, why this might be happening, and what you can do to resolve or work around it.

What’s Happening with Transmission After 5.31.108

Prior to the 5.31.108 firmware update, Transmission on the WD EX2 Ultra handled torrent files smoothly, regardless of their size. However, after updating, users have noticed that attempting to upload torrent files larger than 100KB either freezes the web interface or results in an error stating that the file cannot be added. Smaller torrents, under the 100KB threshold, still work fine.

The Transmission web interface continues to load normally, and the daemon starts as expected, which rules out total corruption of the service. The problem specifically appears tied to how the firmware interacts with the Transmission configuration files and file size handling.

Possible Causes Behind the Issue

The WD EX2 Ultra 5.31.108 update introduced new system-level security and permission management features. These changes may have altered the way Transmission reads, stores, or validates torrent files. There are several possible explanations for this behavior:

Permission or Ownership Restrictions: The firmware update might have reset or restricted write permissions in Transmission’s configuration or temporary directories, preventing the client from saving large .torrent files properly.

Memory Limitation: The Transmission process could be facing new memory allocation limits, making it unable to handle larger torrent metadata.

Web Interface or File Upload Restriction: WD’s internal web service layer might have imposed a file size cap (e.g., 100KB) for uploads through the Transmission interface.

Corrupted Configuration Files: The update might have replaced Transmission’s settings.json file, reverting it to default parameters that conflict with previous versions.

In some cases, Transmission’s temporary directory might now be mounted on a restricted volume, blocking large uploads.

Temporary Workarounds

Until Western Digital provides a patch or firmware rollback option, there are several ways to work around this limitation:

1. Add Torrents via URL Magnet Links

If you can’t upload the .torrent file directly, try adding it as a magnet link. Magnet links bypass file upload limitations and are handled directly by the Transmission daemon.

2. SSH Access and Manual Torrent Placement

Advanced users can SSH into the EX2 Ultra and manually place the .torrent file into the daemon/torrents directory. Restarting the Transmission service after adding the file can force it to load manually.

3. Downgrade Transmission or Firmware

If your downloads depend on Transmission, consider rolling back to an earlier firmware version, such as 5.27.119 or similar, where Transmission worked without issues. However, note that WD has disabled easy rollback in recent versions, and this should be done with caution.

4. Use Docker or Third-Party Transmission Builds

Some users have installed Transmission via Docker or Entware, which allows for independent configuration and avoids WD’s imposed restrictions. This method is more technical but provides a stable workaround.

What WD and Users Are Saying

On WD community forums, several users have confirmed that after the 5.31.108 update, Transmission stopped accepting large torrent files. Reports show consistent failure around the 100KB size mark, pointing to a firmware-level change rather than individual misconfiguration.

So far, Western Digital has not officially acknowledged the bug in their release notes. However, many users have requested a fix or a rollback option. Until an official solution is provided, using SSH-based manual imports or magnet links remains the most practical method.

Preventive Tips for Future Firmware Updates

To avoid similar issues in the future, it’s wise to disable automatic firmware updates on your WD EX2 Ultra if you rely on Transmission or third-party services. Always back up configuration files before updating, including Transmission’s settings.json and download directory permissions.

If a firmware update becomes necessary, review community feedback first to see if any known bugs exist. This can prevent downtime and avoid the loss of critical features.

Conclusion

The WD EX2 Ultra 5.31.108 Transmission issue, where users can’t add .torrent files larger than 100KB, is a frustrating result of changes introduced in the new firmware. While smaller torrents work fine, larger files trigger upload errors due to possible restrictions in file handling or permissions.

Until Western Digital provides a fix, using magnet links, manual torrent placement via SSH, or custom Transmission builds can help maintain functionality. The problem highlights how firmware updates, though designed for security and stability, can sometimes disrupt essential features. Careful update management and backup practices are the best ways to stay protected from similar issues in the future.