# Dfu error - Unable to Update NoteCard Firmware

**URL:** <https://discuss.blues.com/t/dfu-error-unable-to-update-notecard-firmware/1353>\
**Category:** Troubleshooting\
**Created:** [April 3, 2023, 3:49pm UTC](https://discuss.blues.com/t/dfu-error-unable-to-update-notecard-firmware/1353 "2023-04-03T15:49:13Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![jgeckard](https://avatars.discourse-cdn.com/v4/letter/j/d07c76/32.png) [@jgeckard](https://discuss.blues.com/u/jgeckard)\
**Post date:** [April 3, 2023, 3:49pm UTC](https://discuss.blues.com/t/dfu-error-unable-to-update-notecard-firmware/1353/1 "2023-04-03T15:49:13Z")

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My notecard is running firmware 2.1.1.2013839 and I am unable to enable it for notecard firmware updates. The following command on this [page](https://dev.blues.io/guides-and-tutorials/notecard-guides/notecard-outboard-firmware-update/#notecard-outboard-firmware-update) gives an error.

 ![image](https://us1.discourse-cdn.com/flex020/uploads/blues/original/1X/bb23dbc37ba82708491f0d8295f7465a39cb6c15.png)

How do I resolve this?

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**Author:** ![tjvantoll](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.blues.com/tjvantoll/32/231_2.png) [@tjvantoll](https://discuss.blues.com/u/tjvantoll)\
**Post date:** [April 3, 2023, 4:01pm UTC](https://discuss.blues.com/t/dfu-error-unable-to-update-notecard-firmware/1353/2 "2023-04-03T16:01:31Z")

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Hi @jgeckard,

The `card.dfu` request configures the Notecard for performing outboard (host) firmware updates, and does not update firmware on the Notecard itself.

For doing that you can refer to this guide: [Notecard Firmware Updates - Blues Developers](https://dev.blues.io/notecard/notecard-firmware-updates/). The easiest and recommended way to update a Notecard’s firmware is through Notehub: [Notehub Walkthrough - Blues Developers](https://dev.blues.io/notehub/notehub-walkthrough/#manage-notecard-firmware).

TJ

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**Author:** ![tjvantoll](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.blues.com/tjvantoll/32/231_2.png) [@tjvantoll](https://discuss.blues.com/u/tjvantoll)\
**Post date:** [April 4, 2023, 12:37pm UTC](https://discuss.blues.com/t/dfu-error-unable-to-update-notecard-firmware/1353/3 "2023-04-04T12:37:18Z")

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Ah I think I might’ve misunderstood your initial question. To use the `card.dfu` request you’ll need to [update your Notecard firmware](https://dev.blues.io/notecard/notecard-firmware-updates/).

Your Notecard is running 2.1.1, and you need to use a 3.x version to use `card.dfu` and Notecard Outboard Firmware Update.

TJ