Where to get firmware RR09_X.PKG for the drive model : 2004FBYZ-01YCBB1?

Does anybody has the firmware RR09 for the Western Digital internal Enterprise disc : model WD2004FBYZ-01YCBB1. Can you put here as an attachment. The file has the structure RR09_X.pkg . It can be flashed with for example the “WDCKIT” software. I know there is a new firmware version (RR09) for the models : 2005FBYZ-XXXXXX and 2004FBYZ-XXXXXX. the XXXX means an internal number used by Western Digital itself , for example 01YCBB1


Have you opened a Support Case? If not opened, for more information, please contact the WD Technical Support team for the best assistance and troubleshooting:https://support-en.wd.com/app/ask

Yes I did. I am now waiting for news concerning the firmware RR09 for drive model : WD2004FBYZ-01YCBB1. thanks for answering.