I need older firmware ( bin file ) for Ext2 Ultra I need the vers

I need older firmware ( bin file ) for Ext2 Ultra I need the version 2.30.196 bin file ideally.

http://download.wdc.com/nas/My_Cloud_BVBZ_2.30.196.bin

Thank you. This is the more useful information i ever received from WD. Can you confirm it is the correct version for the

Ext2 Ultra variant ?

k_unc:

You rock! Thank you so very much. If you back your NAS up to a MyBook, and have the MyBook locked with WD Security, the new firmware won’t let you unlock the MyBook from the GUI. I called WD and got Max in India who told me I could not roll back the firmware. Your link is golden. I downloaded the firmware, rolled it back, and it fixed my problem.

Thank you again.