# Swan

**URL:** https://discuss.blues.com/c/hardware/swan/29.md

[Latest](https://discuss.blues.com/latest.md) · [Categories](https://discuss.blues.com/categories.md) · [Tags](https://discuss.blues.com/tags.md)

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## [About the Swan category](https://discuss.blues.com/t/about-the-swan-category/3309)

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**Author:** [@RobLauer](https://discuss.blues.com/u/RobLauer)\
**Replies:** 0\
**Last updated:** [October 9, 2025, 5:41pm UTC](https://discuss.blues.com/t/about-the-swan-category/3309 "2025-10-09T17:41:32Z")

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Use this category for questions about Blues Swan.

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## [Trouble Completing OTA Host MCU (Swan + CircuitPython) Firmware Updates Using Notecard DFU](https://discuss.blues.com/t/trouble-completing-ota-host-mcu-swan-circuitpython-firmware-updates-using-notecard-dfu/3376)

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**Author:** [@chasez0r](https://discuss.blues.com/u/chasez0r)\
**Replies:** 8\
**Last updated:** [March 15, 2026, 4:30pm UTC](https://discuss.blues.com/t/trouble-completing-ota-host-mcu-swan-circuitpython-firmware-updates-using-notecard-dfu/3376 "2026-03-15T16:30:29Z")

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Hello, I’m trying to update my host MCU firmware (Swan running CircuitPython) over-the-air using the Notecard’s outboard DFU, but I keep running into issues where the host MCU never comes back up properly leading me to …