EPROM programmer
Un-encrypted Kickstart ROM image
1 * 27C400 for 16-bit Amiga's
2 * 27C400 for 32-bit Amiga's
ROM Tower for some A3000's or alternate EPROM.
Load the programmer software, select the device, select an option that resembles HIGH WORD(all good EPROM programmer software supports 32-bit splitting over two EPROMS). Program
Repeat for Low Words.
Disclaimer: Kickstart is still under copyright and it is illegal for you to duplicate kickstart ROM's without a license.