# How to download rabbit field utility version 4.72 for MB200 controller?

**URL:** <https://forums.digi.com/t/how-to-download-rabbit-field-utility-version-4-72-for-mb200-controller/22887>\
**Category:** Rabbit Software\
**Tags:** utility, field, rabbit\
**Created:** [January 7, 2022, 8:30am UTC](https://forums.digi.com/t/how-to-download-rabbit-field-utility-version-4-72-for-mb200-controller/22887 "2022-01-07T08:30:24Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Raju1111](https://avatars.discourse-cdn.com/v4/letter/r/ea5d25/32.png) [@Raju1111](https://forums.digi.com/u/Raju1111)\
**Post date:** [January 7, 2022, 8:30am UTC](https://forums.digi.com/t/how-to-download-rabbit-field-utility-version-4-72-for-mb200-controller/22887/1 "2022-01-07T08:30:24Z")

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I am trying to connect my controller MB200, with RFU version 2.45 but it is not detecting my controller.

From where and how can I download and install the  
RFU 4.72 version?

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**Author:** ![TomCollins](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.digi.com/tomcollins/32/37_2.png) [@TomCollins](https://forums.digi.com/u/TomCollins)\
**Post date:** [January 8, 2022, 5:40pm UTC](https://forums.digi.com/t/how-to-download-rabbit-field-utility-version-4-72-for-mb200-controller/22887/2 "2022-01-08T17:40:49Z")

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RFU 4.72 is included in Dynamic C 10.72 and later.

[https://hub.digi.com/support/products/dynamic-c/?path=/support/asset/dynamic-c-1072e-new-release/](https://hub.digi.com/support/products/dynamic-c/?path=/support/asset/dynamic-c-1072e-new-release/)

I don’t recognize the product “MB200”, but RFU 4.72 should work with all Rabbit 2000, 3000, 4000, 5000 and 6000 products shipped by Zworld/Rabbit Semiconductor/Digi International.