# mtion worlds SDK FAQs ## I downloaded Unity but the SDK isn't compatible? mtion worlds SDK only works with Unity version 2021.3.25f1 which can be downloaded from The Unity download archive ## I'm trying to use the SDK Git url but its not working? In order to use the Git URL you will need Git installed from Another option is to download the latest .tgz file from [ ](https://github.com/mtion-tv/MtionSDK/releases)and in Unity use the option 'install from Tarball'. ## How do I update the SDK when a new version is released? If you are using Git url, then the updates are always automatic. If you are using the Tarball, you should be able to just load the new .tgz file. Don't need to uninstall first, assets should be overwritten with new ones. ## I imported a world/Asset into mtion worlds but I don't see it? If haven't you will have to restart mtion worlds when you import anything from unity in order for it to show up. ## Do certain shaders work with mtion worlds? Most shaders such as VRM and Poiyomi do work with mtion worlds. If you encountered a shader that does not work, please let us know in the mtion Discord SDK support channel. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.mtion.xyz/mtion/mtion-worlds-sdk/mtion-worlds-sdk-faqs.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.