The FFU firmwares provided here are for testing purposes only. We can't be responsible for any data loss caused by those firmware images. Those FFU firmwares contain only Windows Desktop (Windows 11 on ARM), they do not contain Android, Linux, Windows 10X or Windows 10 Desktop, and will never contain it. By flashing them you agree to lose your current Windows 11 installation and replace it with a new Windows 11 on ARM one. Make backups of your data prior to flashing those FFU images. Please refer to instructions on how to flash those FFU firmwares onto your device.