Update your ventoy stick on a Debian based system to the latest version and keep your files i.e. just update to the latest version
So first we open our terminal as always CTRL+Alt+t or Alt + F2 and then search for console/terminal
IMPORTANT!:
Always keep in mind that no software nor hardware is perfect, mistakes and errors can happen. Therefore, please apply a backup of all your relevant files/data!
Download the latest version from here
https://github.com/ventoy/Ventoy/releases
Extract the .tar file move into the extracted folder Make this file executable Ventoy2Disk.sh
chmod +x Ventoy2Disk.sh
Then run this command lsblk
Then insert your USB Stick into your computer
Run again lsblk
Determine your block device and then run this command
sudo sh Ventoy2Disk.sh -u /dev/sdx
sdx here is your device, it could look something like this. Keep in mind you determine the device 100 % because this could delete all files on a SSD/HDD! Just saying :)
sudo sh Ventoy2Disk.sh -u /dev/sdb
You are done, cheers