Install HollyHock-2

In order to get the custom programs to run on your classpad, you’ll have to “mod” it using a custom patched rom. In plain english, that mean you’ll modify the software that run on your calculator.

Support

If you need help or support feel free to join our Discord Community, we’re always happy to help !

Disclaimer

Caution

A little disclaimer about possible effects is needed :

• I AM NOT RESPONSIBLE FOR ANY DAMAGE YOU MAY DO TO YOUR fx-CP400.
• I AM NOT LIABLE IF YOU BRICK OR OTHERWISE DAMAGE YOUR CALCULATOR.
• CASIO WILL NOT FIX YOUR CALCULATOR IF IT SHOWS EVIDENCE OF TAMPERING, I.E. FLASHING WITH MODIFIED FIRMWARE IMAGES OR MESSING WITH DEBUG MENUS.
• I WILL NOT FIX YOUR CALCULATOR.
• IF YOU CANNOT FIX YOUR CALCULATOR YOURSELF, DO NOT USE THIS TOOLKIT.
• BY USING THESE TOOLS, YOU AGREE TO TAKE FULL RESPONSIBILITY FOR ANY DAMAGE THAT MAY OCCUR.
• YOU HAVE BEEN WARNED

With that said, let’s get real !

Video guide

Simple install

First, you’ll need the newest release of HollyHock2, grab it here : https://github.com/SnailMath/hollyhock-2/releases. Scroll down to the “Snail2021.zip” and follow the instruction :

• Extract the folder Snail2021 to the Desktop
• Run Snail2021.exe
• Follow the instructions on screen (You need these things: http://angusj.com/resourcehacker/ and https://tiplanet.org/forum/archives_voir.php?id=1044960 )
• When you installed the update on the calculator, disconnect and reconnect it and copy run.bin, Tetris30.hhk and snake.hhk onto the calculator.