# Use an older version of FMOD in a newer version of Unity

**URL:** <https://qa.fmod.com/t/use-an-older-version-of-fmod-in-a-newer-version-of-unity/13253>\
**Category:** Unity\
**Created:** [June 27, 2017, 5:03am UTC](https://qa.fmod.com/t/use-an-older-version-of-fmod-in-a-newer-version-of-unity/13253 "2017-06-27T05:03:33Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Blacksea\_Odyssey](https://avatars.discourse-cdn.com/v4/letter/b/35a633/32.png) [@Blacksea\_Odyssey](https://qa.fmod.com/u/Blacksea_Odyssey)\
**Post date:** [June 27, 2017, 5:03am UTC](https://qa.fmod.com/t/use-an-older-version-of-fmod-in-a-newer-version-of-unity/13253/1 "2017-06-27T05:03:33Z")

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I’m currently updating my Unity from version 5.1 to Unity 5.6. Currently I’m using FMOD version 1.06. Is it possible to upgrade my Unity version without upgrading my version of FMOD? If so how do I go about this? After upgrading it appears I’ve run into a few issues.

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<div class="post-metadata">

**Author:** ![cameron-fmod](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/cameron-fmod/32/261_2.png) [@cameron-fmod](https://qa.fmod.com/u/cameron-fmod)\
**Post date:** [June 27, 2017, 11:15pm UTC](https://qa.fmod.com/t/use-an-older-version-of-fmod-in-a-newer-version-of-unity/13253/2 "2017-06-27T23:15:03Z")

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I imagine there will be a number of changes required, backwards compatibility would not be an issue (using a newer version of FMOD with and older version of Unity). But forward compatibility cannot be guaranteed (older FMOD with newer Unity).

If you follow the error messages in the console window you should be able to make all the changes needed.