1. Download OPOS2.67e. Click here to Download OPOS2.67.e 2. Click Open. 3. Unzip To C:\EPSON2.6. 4. Open my Computer. 5. Browse to C:\EPSON2.6\V267ER6\Disk1. 6. Click Setup.exe. 7. Click Next. 8. Accept Terms & Conditions, then follow by clicking Next. 9. Ensure No Registry File is selected, proceed by clicking Next. 10. Select User, then click Next. 11. Click Next. 12. Select Correct Port and click Next 13. Click Finish to Complete.