WD 60EFAX firmware update

Hi
I have just purchased 2of WD60EFAX drives for a Qnap TS-563 and they fail- There is a note on the Qnap compatibility list that the firmware may need updating to version 83.00A83. where do I get this from and how do update the firmware
Many thanks

This is an SMR model:

https://documents.westerndigital.com/content/dam/doc-library/en_us/assets/public/western-digital/product/internal-drives/wd-red-hdd/product-brief-western-digital-wd-red-hdd.pdf

It is not suitable for NAS applications.

https://www.technadu.com/western-digital-2-7-million-dollars-settlement-agreement-end-nas-drive-lawsuit/284591/

I suspect that this “5400 RPM class” model may actually spin at 7200 RPM.

Oh, yeah, welcome to the Community.

https://www.hardcoregames.ca/2019/10/24/western-digital-red-plus-hard-disks/

This post has all of the models known and rpm rates for the red plus series NAS disks

Many thanks for the replies. I just wonder why companies are still selling them as nas drives