# Error Flashing Atreus Firmware / avrdude: butterfly\_recv(): programmer is not responding

**URL:** <https://community.keyboard.io/t/error-flashing-atreus-firmware-avrdude-butterfly-recv-programmer-is-not-responding/4151>\
**Category:** Help and Getting Started\
**Created:** [October 5, 2020, 9:39pm UTC](https://community.keyboard.io/t/error-flashing-atreus-firmware-avrdude-butterfly-recv-programmer-is-not-responding/4151 "2020-10-05T21:39:02Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![jesse](https://yyz1.discourse-cdn.com/flex031/user_avatar/community.keyboard.io/jesse/32/361_2.png) [@jesse](https://community.keyboard.io/u/jesse)\
**Post date:** [October 5, 2020, 10:39pm UTC](https://community.keyboard.io/t/error-flashing-atreus-firmware-avrdude-butterfly-recv-programmer-is-not-responding/4151/2 "2020-10-05T22:39:13Z")

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You do not have a brick!

The Atreus has what should be an unbrickable bootloader.

By holding in ESC as you plug in the keyboard, it will stay in bootloader mode and not start your (non-working) user sketch.

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_[View the full topic](https://community.keyboard.io/t/error-flashing-atreus-firmware-avrdude-butterfly-recv-programmer-is-not-responding/4151)._