# High frequency Scatterer Instrument doesn't work well after 1.10 to 2.01 upgrade **URL:** https://qa.fmod.com/t/high-frequency-scatterer-instrument-doesnt-work-well-after-1-10-to-2-01-upgrade/17965 **Category:** FMOD Engine **Tags:** unity **Created:** [November 15, 2021, 4:06pm UTC](https://qa.fmod.com/t/high-frequency-scatterer-instrument-doesnt-work-well-after-1-10-to-2-01-upgrade/17965 "2021-11-15T16:06:52Z") **Posts on this page:** 1 **Showing post:** 9
### Author: ![runevision](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/runevision/32/1079_2.png) [@runevision](https://qa.fmod.com/u/runevision) #### Post date: [November 19, 2021, 7:39am UTC](https://qa.fmod.com/t/high-frequency-scatterer-instrument-doesnt-work-well-after-1-10-to-2-01-upgrade/17965/9 "2021-11-19T07:39:37Z")
I’m glad you were able to reproduce this and think a fix might come soon! Since FMOD 2.01 is still a supported version, does that mean you still release patch releases for it? So that the Scatterer Instrument fix would come to a 2.01.x release and not only 2.02.x? I can’t upgrade from FMOD 2.01 to FMOD 2.02 due to the issue discussed here: > [@How to avoid manually upgrading hundreds of \[EventRef\] to EventReference?](https://qa.fmod.com/t/how-to-avoid-manually-upgrading-hundreds-of-eventref-to-eventreference/17907): > > I’m trying to upgrade a Unity project from Unity 5.6.6 to Unity 2019.4.32 and I’ve got everything more or less working now except FMOD. FMOD did actually work in the Editor without doing anything, but not in builds. It seems like I have to upgrade to FMOD 2 for it to work in builds with Unity 2019? Now, as part of the upgrade process I ran the tool to update event references, and then I was presented with a huge lists of thousands of entries that all said “Manual Task: Add an EventReference fi… --- _[View the full topic](https://qa.fmod.com/t/high-frequency-scatterer-instrument-doesnt-work-well-after-1-10-to-2-01-upgrade/17965)._