# Firmware flash hangs

**URL:** <https://community.keyboard.io/t/firmware-flash-hangs/2581>\
**Category:** Help and Getting Started\
**Created:** [February 22, 2019, 4:27am UTC](https://community.keyboard.io/t/firmware-flash-hangs/2581 "2019-02-22T04:27:53Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![TheEvilSloth](https://yyz1.discourse-cdn.com/flex031/user_avatar/community.keyboard.io/theevilsloth/32/2128_2.png) [@TheEvilSloth](https://community.keyboard.io/u/TheEvilSloth)\
**Post date:** [February 22, 2019, 4:27am UTC](https://community.keyboard.io/t/firmware-flash-hangs/2581/1 "2019-02-22T04:27:53Z")

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Hi all,

Tried to update the firmware on my Model 01 and have run into a persistent difficulty. When trying to flash the stock firmware (here: [https://raw.githubusercontent.com/keyboardio/Model01-Firmware-Builds/master/v1.22-MP2-BUILD/atmega32u4\_firmware.hex](https://raw.githubusercontent.com/keyboardio/Model01-Firmware-Builds/master/v1.22-MP2-BUILD/atmega32u4_firmware.hex))

I get persistent hangs. Pastebin error here: [https://pastebin.com/DwjZwfPi](https://pastebin.com/DwjZwfPi)

Similar difficulties when I try to flash using the Arduino IDE (1.8.7), errors here: [https://pastebin.com/2ndYPhVe](https://pastebin.com/2ndYPhVe)

In terms of getting the Keyboardio into the bootloader, plugging in with prog held down “works” insofar as the Arduino IDE sees it, then gives the errors. Equally, hitting the reset button on the firmware gets it into the boot loader, but the errors persist.

I’m running Ubuntu 18.10, the keyboard shows up when I run lsusb:  
Bus 003 Device 006: ID 1209:2301 InterBiometrics Keyboardio Keyboardio Model 01

and variously connects as either /dev/ttyACM0 or 1 seemingly at random when it plugs in/gets reset. If that’s the issue, I have no idea how to fix it…

Thoughts greatly appreciated, as I’ve thoroughly tapped my (very limited) knowledge of microcontrollers and I’d rather like to get back to using what has otherwise been the best keyboard I’v ever owned.

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<div class="post-metadata">

**Author:** ![TheEvilSloth](https://yyz1.discourse-cdn.com/flex031/user_avatar/community.keyboard.io/theevilsloth/32/2128_2.png) [@TheEvilSloth](https://community.keyboard.io/u/TheEvilSloth)\
**Post date:** [February 22, 2019, 4:53am UTC](https://community.keyboard.io/t/firmware-flash-hangs/2581/2 "2019-02-22T04:53:57Z")

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Update:

Curiously the the firmware flash worked despite throwing up these errors/hangs. Good news, but odd. If I get to the bottom of it I’ll let you know what happened…

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**Author:** ![algernon](https://yyz1.discourse-cdn.com/flex031/user_avatar/community.keyboard.io/algernon/32/4404_2.png) [@algernon](https://community.keyboard.io/u/algernon)\
**Post date:** [February 22, 2019, 7:24am UTC](https://community.keyboard.io/t/firmware-flash-hangs/2581/3 "2019-02-22T07:24:14Z")

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Are you, by any chance, running ModemManager?

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<div class="post-metadata">

**Author:** ![TheEvilSloth](https://yyz1.discourse-cdn.com/flex031/user_avatar/community.keyboard.io/theevilsloth/32/2128_2.png) [@TheEvilSloth](https://community.keyboard.io/u/TheEvilSloth)\
**Post date:** [March 12, 2019, 3:35am UTC](https://community.keyboard.io/t/firmware-flash-hangs/2581/4 "2019-03-12T03:35:33Z")

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yes, and as it turns out disabling it solved my problem.

I don’t use it on my dd, so that won’t be an issue. I do use it to send sms on another laptop, but we’ll cross that bridge if/when we come to it.

thanks for the assist!

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<div class="post-metadata">

**Author:** ![algernon](https://yyz1.discourse-cdn.com/flex031/user_avatar/community.keyboard.io/algernon/32/4404_2.png) [@algernon](https://community.keyboard.io/u/algernon)\
**Post date:** [March 12, 2019, 6:45am UTC](https://community.keyboard.io/t/firmware-flash-hangs/2581/5 "2019-03-12T06:45:31Z")

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You can install `etc/99-kaleidoscope.rules` as `/etc/udev/rules.d/99-kaleidoscope.rules`, and that should disable ModemManager for the Model01 only.