N.B. No responsibiltiy is accepted by the author, this site or myself.
The following will result in any warranty being made void.
N.N.B. When flashing make sure drive tray is empty.
If unsure or new to flashing consider flashing drives in safemode.
Special thanks go to ala42 for all the effort & quick responses given, regarding MCSE.

The following example is an IDE drive.
The process is identical for SATA drives like the 215(D).
Having downloaded the official firmware.
Official site : -
Software Downloads - Pioneer Europe
You may have already done this.
In which case move on to the next stage.
Run f/w, selecting where you want the folder destination to be.
Click on Run button.
Click on Install button.
If you have already updated you will see this window.
If you have not yet updated. The loading of the update can be followed in the DOS window. (See last page for example).