Firmware Update 2.5b for Sony DW-U55A (CD-RW / DVD+/- RW Drive)
This program will update Firmware on the following VAIO Notebook models running Windows XP:








This module is a firmware updater for Windows.

It updates DW-U55A firmware to 2.5B

Fixed bugs:

Added support for readability of a DVD+R Dual Layer Single session Finalized disc.


Do not shutdown the unit while the Firmware update procedure is in progress.

Do not stop the Firmware update procedure while in progress.

Not following any of the above, could severely damage your system !!

How to verify if your unit has a Sony DW-U55A?

1. Click on the Start button and than right click on My Computer.

2. Click on Properties.

3. Select the Hardware tab and than click on Device Manager.

4. Double click on DVD/CD-ROM drives.

5. Verify now that you can see Sony DVD RW DW-U55A

6. If you have the corresponding drive, than you can proceed with the Firmware upgrade.

Download the Upgrade:

1. Double click on "DWU55A_FW_25b.exe".

2. Select a folder, where this file will be saved to, for example C:\Download

3. Click to "Save".

Extract the file to the harddisk:

1. Go to the folder where the file (DWU55A_FW_25b.exe) has been saved.

2. Double click to "DWU55A_FW_25b.exe".

3. Make sure under "Unzip to folder" "C:\Download\" is mentioned.

4. Then click to "Unzip". The files will be extracted to the folderC:\Download\.

5. When a window appears with "3 file(s) unzipped successfully", click OK.

6. Click to "Close" to close the application.

Upgrade instructions

1. Open the Windows Explorer and go to the following folder: "C:\Download\".

2. Open the folder Sony DW-U55A (FW 2.5b)

2. Run update file "U55A_25b.exe".

3. The dialog box for a starting check appears. Click the "Yes" button.

4. Make sure the drive name is "Sony DVD RW DW-U55A xxxx".

5. If xxxx is not equal to "2.5b",than this drive needs to be updated to the new firmware.

6. Click the "Start Update" button.

7. Click "Yes", when the screen displays "Before Updating". Your computer will restart now.

8. Click the "Start Update" button.

9. If you are ready to update, click on "Yes".

10. The FW-update is started (automatic). Please, don"t turn off the computer until the upgrade is completed.

11. If the Update is finished, Click "Yes". The unit will restart.

How to identify the new version?

1. Use the update tool to identify the new version.

2. Go to the following folder: "C:\Download\Sony DW-U55A (FW-2.5b)"

3. Double click on the update tool: U55A_25b

4. The dialog box for a starting check appears. Click the "Yes" button.

5. Make sure the drive name is "Sony DVD RW DW-U55A 2.5b".

6. If you see the same drive name, than the firmware has been updated correctly.

7. Click on Exit.



  • DWU55A_FW_25b.exe


  • 32 bit


  • 965.5 Kb

Kibocsátás dátuma

  • 98-72-2004