KICKSTART "alternate" versions: How is it Possible?

[CodeHunter]

Hello all,

According to a Wikipedia article on Amiga Kickstart, "With third-party software, it is possible to use an alternate Kickstart to the version stored in the embedded ROM chip. Such software allows a Kickstart version to be loaded from file into RAM - for example Kickstart 1.3 may be loaded in order to run old software incompatible with Kickstart 2.0 or later."

http://en.wikipedia.org/wiki/Kickstart_%28Amiga%29


Questions:

1) Would you let me know what is this software?

I am thinking about using it on my A600HD or A1200, since most .ADF games/demos that I convert to real Amiga floppy diskettes do not work on them. (work perfectly on my newly acquired A500 though)

2) Can I "downgrade" my A600HD, by physically removing its current 2.0 Kickstart ROM chips, and insert 1.3 Kickstart chips instead? (Although I prefer the software method, if it is available according to Wikipedia)

Your comments, insights and posts are appreciated.

[CodeHunter]

Thanks. I searched for this program with no luck. What is the difference between this one and TUDE?

A link to either of programs is greatly appreciated.

Thanks.

UPDATE: I have found a link for relokick 1.4 here:
http://cd.textfiles.com/zoom2/utilities/wb/relokick/

How do I run it? Do I first let my A600HD or A1200 boot into Workbench and then run this small file?

Thanks.

[CodeHunter]

You could try SoftKick. Also try Degrader, as someone else suggested.

Thanks. But it seems that relokick is a better utility. Could you please provide a link in .ADF format?

Thanks.

UPDATE2:
I found this, but I am not sure if this is the origianl or the "hacked" version:

http://www.pictureinthesky.net/appinfo.php?id=46

Does anyone have a link to 1.3 and 1.4/1.4a in ADF format?