have purchased. This is because the license type will no longer be an OEM license after the upgrade. Additionally, due to the modified device software, the manufacturer’s repair network will likely have to replace key components before it can properly test, repair and verify the device using their own repair tools and software. Consequently, if the manufacturer does perform a warranty repair, it will likely charge the user a significant service fee for the additional costs caused by the upgraded edition of the OS. Limitations The device manufacturer can no longer guarantee the full functionality of the device after performing an edition upgrade. This may cause unexpected side effects that may include but are not limited to the following: The device may stop working completely. Certain features and functionalities may be disabled. The device may become unsafe to the point of causing the user harm. The device becomes physically damaged due to overheating. The behavior of the device may be altered. Some content on the device may no longer be accessible or playable due to invalid DRM keys. Some user data, settings, and accounts may disappear. Therefore, a data backup is recommended. Software updates delivered via FOTA (Firmware Over the Air) or Web Download services may not work on the device anymore. For example, the user can no longer receive any more firmware updates from the manufacturer itself. The device manufacturer will not be responsible for the damages caused by any edition upgrades being installed to the user’s PC. Furthermore, applications which require a trusted execution environment (TEE) to operate will not work properly because after performing an edition upgrade, the device will no longer be trusted. For example, on Samsung Galaxy Book devices, performing an edition upgrade will cause the Knox fuse to be blown (0x1), causing some apps like Samsung Pay and Samsung Secure Folder to no longer work, just like with their Android devices. Upgrading the edition will also affect the DRM protection of the device. Therefore, some applications which require DRM protection may not work anymore or block certain functions due to this untrusted state. Common examples for affected applications are services which offer download/streaming of paid multimedia content like music and movies or services offering mobile payment. Security risks Using an upgraded edition of Windows may lead to monetary damages due to viruses, malwares, and leakage of personal information from hacking. The user will be