STRIP 6Y3921 - Caterpillar

Flash the CDVR
Apply power to the CDVR.
Connect a communication cable between the RS-232 connector (J4) of the CDVR and the appropriate communication port of your PC.
Start the CDVR PC software.
Click "Upgrade" on the "Menu" bar. Click "Upload Embedded Software". Refer to Illustration 20. If this menu selection is grayed out, close CDVR communication. Refer to the "Terminating Communication" section for information about closing CDVR communication.
Illustration 20 g01408125
Upload Embedded Software
When "Upload Embedded Software" is clicked, a dialog box appears and verifies your intent to update the firmware. Click "Yes" to proceed. When "Yes" is clicked, the "CDVR Embedded Program Loader" screen will appear. Refer to Illustration 21. Note: Uploading firmware may replace some user adjusted settings with factory default settings.
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Click the "Get Device Information" button. The "CDVR Embedded Program Loader" will retrieve and will display the CDVR model number. The information will be displayed in the left-hand column as shown in Illustration 22.
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Click the "Start Transfer Data" button in order to proceed with software uploading. Illustration 23 will appear. Illustration 23 recommends that the CDVR settings be saved in a file that can be uploaded to the CDVR after the embedded firmware is updated.
Illustration 23 g01408133
Click "No" in order to exit the upload process and in order to create a CDVR settings file. Refer to the "Settings Files" section for information about creating a settings file. Click "Yes" in order to continue with the upload process and in order to display the "Open" dialog box that is shown in Illustration 24. The "Open" dialog box is used in order to locate and select the appropriate file for uploading to the CDVR. Only files with the .s19 extension is displayed in the "Open" dialog box.
Illustration 24 g01408135
Select the appropriate file for uploading. Click the "Open" button in order to start the file transfer. If the dialog box appears that is shown in Illustration 25, then software is asking for the serial number of the CDVR. Enter the eight (8) numerical digits of the serial number exactly as numbers appear on the upper right-hand corner of the label on the CDVR. Ignore the letters GD. Do not use the CDVR serial number that is shown in the PC software. Do not use spaces, dashes, or any other symbols. Press "Enter".
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Serial number change
A dialog box will appear in order to indicate the progress of the file transfer. Refer to Illustration 26.
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Once the transfer is complete, the device information is displayed in the right-hand column of the "Embedded Program Loader". Refer to Illustration 27. The displayed program version number indicates the version and the date of the firmware that was loaded.
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CDVR Information After Upload
Close the "Embedded Program Loader". The default settings are loaded into the CDVR and are checked. If desired, the settings can be reloaded into the regulator from the saved settings file. Refer to the "Settings Files" section for information about loading a settings file.Flash the CDVR Using Cat ET Software
The following items are needed in order to flash