Release Notes

4.0.1

20 May, 2026

Release focused on My OPSWAT Central Management support, Port Alarm Protection and bug fixes

New Features


Remote Management via CM10

Enables the Media Firewall to be configured remotely through My OPSWAT Central Management (CM10). This includes support for remote configuration upload, writeback and syslog settings, certificate management, and enhanced session reporting.

Port Alarm Protection — USB Tamper Detection with FOB Monitoring

Enhances the Media Firewall's tamper detection by adding FOB monitoring to detect when blocking USB fobs are removed from host ports, triggering Alert Mode with visual (red LEDs), audible (speaker alarm), and remote notifications (My OPSWAT health report, syslog). This feature also supports keyboard and mouse passthrough, allowing HID peripherals to remain connected to the host without triggering false alarms.

Bug fixes


Bug Fixes & Stability Improvements

Several bug fixes have been included to improve overall performance and stability, covering areas such as boot time optimization, media detection reliability, firmware upgrade compatibility, storage validation, logging improvements, and configuration persistence.

Known issues


LED status displays incorrectly after removing and reinserting OTG device

The LED status may freeze or display incorrectly after unplugging and re-plugging the OTG cable following a scan; in some rare cases the MMF storage also does not properly eject after media removal.

Device version not updated in CM10 after MMF upgrade via USB

After upgrading MMF via USB while enrolled in CM10, the device version shown in CM10 may not update even though the upgrade completes successfully.


3.4.0

28 April, 2025

Release focused Port Alarm Protection, syslog functionality, and bug fixes

Features


Port Alarm Protection

Media Firewall now has the ability to monitor its connection to a Host. When connection is lost, the Media Firewall will alert to notify administrators via syslog.

syslog support

Support for configuring a remote syslog server for delivering system event messages

Fixed


Copy files to media

Fixed instances where a copied file would sometimes be empty.

Simplified the copy process to no longer require a disconnect from the Host.

The ability to allow copying is now configurable.

Internal improvements

Upgraded internal components for further stability and security


3.3.0

6 January, 2025

Release focused on allowing files to be copied to media and minor adjustments to LED display

Features


Copy files from host to media

Files can now be copied from a connected host system to the scanned media

Fixed


LED display

Changed white to cyan to avoid any confusion in progress display


3.2.1

12 December, 2024

Release focused on internal improvements for future releases

Fixed


MMF hardware readiness

Improved internal processes for releasing MMF hardware


3.2.0

30 September, 2024

Release focused on improving system stability, LED display, & upgrade mechanism

Features


Multiple manifest support

Added ability to support validating media that contains multiple media manifests

Fixed


System hang

Improved system performance to correct irregular media validation hang observed after some use

File handling stability

Adjusted file handling to support filenames with different encodings

File validation

Revised file categorization that would previously block files that should have been allowed

LED display

Modified the power-on sequence and display when an upgrade is performed

MyOPSWAT connection

Corrected issue where the connection to management would drop intermittently

Online upgrade

Fixed situations where retrieving firmware upgrades from MyOPSWAT would fail

Update stability

Enhanced the update mechanism for stability in future upgrades


3.1.0

25 September, 2023

Initial release of the MetaDefender Media Firewall

Validate media processed by Kiosk

With Media Manifest usage enabled in a Kiosk, the Media Firewall can validate media processed with a Kiosk and expose access to allowed files

Central Management

View dashboard statistics, device health, and reports from MyOPSWAT

Updates

Media Firewall will automatically update itself when a new version is released when setup to connect to the internet.

Optionally, an upgrade package can be applied to systems manually if they are air-gapped.

Minimum supported Kiosk versions

Windows Kiosk: 4.6.3

Linux Kiosk: 5.5.2