This script converts SDLOADER.BIN by Costis to a dol file. It was written by Samson and posted on devkitpro forums on August 27, 201: http://devkitpro.org/viewtopic.php?f=3&t=2120

note: SDLOADER.BIN start address is 0x81700000.

note 2: sdload-slota-dl3.dol has been compressed with dollz3 (no options).