Security Vulnerability Fix for Bluetooth ACPI Driver TOSRFEC.SYS and DRFEC.SYS

The recommended solution is to update the driver to version v11.0.2.3 or later !

Affected Model List:

Tecra Serie

Tecra X50-F
PLR31 | PLR33 | PLR34
Tecra X40-F
PMR30 | PMR31 | PMR33
Tecra A40-E
PMZ10 | PMZ11 | PMZ12
Tecra X40-E
PT481 | PT482 | PT484
Tecra A50-E
PS599 | PS59A | PS59B
Tecra Z50-E
PT591 | PT5A3

Portege Serie

Portege X20W-E
PRT20 | PRT22 | PRT23 | PRT24
Portege A30-E
PSZ10 | PSZ11 | PSZ12 | PSZ14
Portege WT30 / XT30-E
PT17A | PT17C | PT17D | PT17E | PT17G
Portege X30-E
PT281 | PT282 | PT284
Portege Z30-E
PT291 | PT293 | PT294 | PT295 | PT296 | PT297
Portege X30-F
PUR30 | PUR31 | PUR33 | PUR34

Satellite Pro Serie

Satellite Pro R50-E
PS591 | PS592
Satellite Pro A50-E
PS595 | PS596

Available Update Options:

Windows Update: Run Windows Update to apply the latest Bluetooth ACPI driver automatically.
Download the latest Dynabook System Driver which includes the Bluetooth ACPI driver (v11.0.2.3) directly from the attachement below.
Go to https://emea.dynabook.com/drivers and select your specific model from the dropdown menus.
Example screen shot:

Installation Instructions:

Automatic update via Windows Update: The installation is handled automatically. No further action is required.
Manual update (direct link or website):

Save the downloaded file to your hard disk or SSD.
Double click the file to execute the update.

Installing the update automatically replaces the old driver file TOSRFEC.SYS with the updated version DRFEC.SYS.

Important Information about the Driver Update:

The drivers TOSRFEC.SYS and DRFEC.SYS were originally included in the Dynabook System Driver packages.
These System Driver packages are still available on our website. However, installing them after applying this security update will not affect your systems security.
The updated driver (version 11.0.2.3 or later) has a newer version number. Windows will automatically keep the secure, updated version and will not replace it with an older one.

RESOLUTION | Detailed

Document ID:

Doc Type:

Info

Online Date:

2026-02-27

Date Modified:

2026-04-10 06:51 AM

Category:

Software, Operation, Driver Update

Company:

Product Category:

Mobile Devices

Product Group:

Tecra, Portege, Satellite Pro

Product Series:

Tecra X Series, Portege X Series, Satellite Pro A Series, Satellite Pro R Series, Tecra Z Series, Tecra A Series, Portege Z Series, Portege A Series, Portege WT Series

Product:

Tecra X40-E, Portege X30-E, Satellite Pro A50-E, Satellite Pro R50-E, Tecra Z50-E, Tecra A50-E, Portege X20W-E, Portege Z30-E, Portege X30T-E, Tecra A50-EC, Tecra X40-F, Portege X30-F, Satellite Pro A50-EC, Tecra X50-F, Portege A30-E, Portege WT30-E, Tecra A40-E

Model Number:

PT482E, PT484E, PT282E, PS595E, PS591E, PT591E, PT284E, PS599E, PRT22E, PRT23E, PT593E, PT293E, PT291E, PS596E, PS59BE, PS592E, PT17CE, PT17AE, PS59AE, PT294E, PT592E, PT281E, PT5A1E, PT5A3E, PT481E, PMR31E, PUR33E, PUR31E, PMR33E, PT5A2E, PLR31E, PLR33E, PSZ10E, PT17DE, PT17GE, PMZ12E, PMZ11E, PSZ11E, PSZ12E, PMZ10E, PUR30E, PRT20E

Operating System:

Windows 10 - 32 Bit, Windows 10 - 32 Bit - Upgrade, Windows 10 - 64 Bit, Windows 10 - 64 Bit - Upgrade, Windows 11 - 64 Bit, Windows 7 - 32 Bit, Windows 7 - 64 Bit, Windows 8 - 32 Bit, Windows 8 - 64 Bit, Windows 8 - Upgrade, Windows 8.1 - 32 Bit, Windows 8.1 - 64 Bit, Windows 8.1 - Update

Keywords:

Bluetooth, Drivers, Info, Security, Security Vulnerability

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