I WILL NOT BE HELD RESPONSIBLE IF YOU BRICK YOUR PRINTER - CREATING AND INSTALLING CUSTOM FIRMWARE IS RISKY

Preface

This script is an adaptation from the original K1 firmware script by pellcorp https://github.com/pellcorp/creality/tree/main/firmware

I changed some stuff for the Nebula pad and added a script in root to install the creality helper script Also changed the shadow file with root password set to 'creality'

Prerequisites

You will need a linux machine with the following commands available, something like ubuntu or arch is fine:

• p7zip (7z command)
• wget
• unsquashfs
• mksquashfs

The packages on ubuntu can be installed like so:

sudo apt-get install p7zip squashfs-tools wget

Don't try and create this on windows or MacOs, you could do it on a ubuntu vm no problem

Creating

Then you can create a new firmware file, currently without any customations just to test things work with:

export NEBULA_FIRMWARE_PASSWORD='the password from a certain discord'
./create.sh

NOTE: You will be required to enter your sudo password

The resulting img file will be located at /tmp/1.1.0.27-koen01/NEBULA_ota_img_V6.1.1.0.27.img

Testing

It's very important to test this in the safest way possible, luckily creality has provided a way to test a new firmware image from the cli rather than relying on the display server

/etc/ota_bin/local_ota_update.sh /tmp/udisk/sda1/NEBULA_ota_img_V6.1.1.0.27.img

Pre Rooted file

I've uploaded a pre rooted .img for you to try here: https://mega.nz/file/8AcXjQLI#ypxpdgXPjwcAG4R6vlcldCK_UPA_MVohBCnmU90gREQ The root password is 'creality'

Thanks

Thanks for pellcorp and destinal from discord for providing information about testing the image and also for providing the password creality uses for generating the image.