Calibrator homebrew tool Wii / GameCube

[Borg Number One]

Hi,
While cleaning up and checking my GameCube homebrew files, I noticed this file: "calibrator-pr0ton.zip".
It appears to be a customized/special version of the Wii/GameCube app: Calibrator by "extrems" – packed in a zip file.
It's also possible that the file name is no longer original and I changed/modified it for some reason, I do not know anymore.

Unfortunately, I no longer have any information about where this file came from (download link/page).

Can anyone help?

Here's some information about the zip file: (File modification date: December 30, 2023 - probably the day I downloaded the file)
Here is the MD5 checksum of the zip file: 60ccd67c5fd2ba721197e608a9b55f02

Content:
File name -- Timestamp -- File size -- MD5 sum
480p-a.dol -- March 18, 2012 5:50 PM -- 231,480 -- 258838d3456dac10168497b2a2b5ce05
480p-b.dol -- March 18, 2012 5:57 PM -- 231,416 -- d77d39ba4fefe97540cb397e80ca4d92
576p-a.dol -- March 18, 2012, 5:51 PM -- 231,480 -- 9875d92e2913a544f482b58cea98e372
576p-b.dol -- March 18, 2012, 5:58 PM -- 231,416 -- 2df84e74ef554f7cf63e990c3bb86d20

Does anyone know of any sites or forum posts where this file is available?

Here are the Calibrator-related links I found today:

https://files.extremscorner.org/wii/apps/calibrator/latest
https://files.extremscorner.org/wii/apps/calibrator/20120507.zip
(found via: http://web.archive.org/web/20130511061511/http://www.wiibrew.org/wiki/Calibrator)

http://wiibrew.org/wiki/Calibrator
https://pdroms.de/nintendo-wii/calibrator-v1-0-1-wii-application
https://wii.brewology.com/downloads/download.php?id=13617&mcid=3
https://www.gamebrew.org/wiki/Calibrator_Wii
https://www.gamebrew.org/wiki/List_of_Wii_all_homebrew
https://dlhb.gamebrew.org/wiihomebrews/calibratorwii.7z (GameCube version included)

But nowhere on the internet can I find this single compressed ZIP archive with the four different Calibrator versions.
I seem to remember that you could once access the subfolders of:

https://files.extremscorner.org/gamecube/apps/gbi/latest
https://files.extremscorner.org/gamecube/apps/gbi/latest-extra
https://files.extremscorner.org/gamecube/saves/ssbm/latest
http://files.extremscorner.org or http://extremscorner.org without getting a 404 error message, and you could download all possible Calibrator versions there.

The question: Why all this effort?
Answer: More and more GameCube-related pages with GameCube tools/homebrew utilities, etc., are disappearing over the years, and they (links to the GameCube tools/GameCube pages) can only be found via old posts in various GameCube-related forums or via web.archive.org.
That's why I'm currently compiling a list of all possible (and almost forgotten) GameCube homebrew utilities – with their original source links.

[Extrems]

It was a test build for a forum member named pr0ton and it was privately shared to them over IRC. It's also for the Wii and not the GameCube.