here is the full story :
I was trying to install windows on my iMac using the regular bootcamp procedure..
but something went horribly wrong, and I ended up with a fully wiped hard disk!!
and to my disappointment, all OSX Installation methods available to me at the time did not work!!
So I started researching and found this app...
within the app itself is the following help text:
HOW-TO create a Clover Bootable Flash drive
with MAC OS X HD Recovery:
1. Fine-tune the BDU [Configuration] (By default, not required).
2. Select any Flash Drive (may be tested on virtual or hard drives, too).
3. [Format] selected Flash Drive into 2 partitions:
Clover bootloader will be automatically installed to the 1st Partition.
4. Open [Download Center], [Update] HD Recovery Download List
and [DL] any Apple MAC OS X HD Recovery. HFS-Image will be
automatically extracted from pkg to the BDUImage Local Repo.
5. [Restore ...] HFS-Image file to the 2nd Disk Partition
6. Enjoy :-)
PS; I found some interesting results when searching by:
RecoveryHDUpdate inurl:swscan.apple.com
RecoveryHDUpdate.pkg inurl:swscan.apple.com