# Problems with flashing

**URL:** <https://forum.sensor.community/t/problems-with-flashing/329>\
**Category:** Uncategorized\
**Created:** [February 17, 2021, 2:01pm UTC](https://forum.sensor.community/t/problems-with-flashing/329 "2021-02-17T14:01:32Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![cleanair](https://forum.sensor.community/user_avatar/forum.sensor.community/cleanair/32/2371_2.png) [@cleanair](https://forum.sensor.community/u/cleanair)\
**Post date:** [February 17, 2021, 2:01pm UTC](https://forum.sensor.community/t/problems-with-flashing/329/1 "2021-02-17T14:01:32Z")

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Dear Luftdaten,

I cannot get the Nodemcu v2 flashed.  
I updated the drivers.  
And I connected the Nodemcuv2 with the usb cable.  
In the window of airrohr flasher it says at the bottom: “no device selected” when I click “upload.”

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**Author:** ![irukard](https://forum.sensor.community/user_avatar/forum.sensor.community/irukard/32/12_2.png) [@irukard](https://forum.sensor.community/u/irukard)\
**Post date:** [February 17, 2021, 4:56pm UTC](https://forum.sensor.community/t/problems-with-flashing/329/2 "2021-02-17T16:56:05Z")

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Dear Cleanair,

Please provide some more information. What version of operating system do you use. Have you tried to use different USB cable?

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<div class="post-metadata">

**Author:** ![cleanair](https://forum.sensor.community/user_avatar/forum.sensor.community/cleanair/32/2371_2.png) [@cleanair](https://forum.sensor.community/u/cleanair)\
**Post date:** [February 17, 2021, 5:29pm UTC](https://forum.sensor.community/t/problems-with-flashing/329/3 "2021-02-17T17:29:30Z")

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Tried a different cable and it was done in a flash…

Thanks irukard

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<div class="post-metadata">

**Author:** ![irukard](https://forum.sensor.community/user_avatar/forum.sensor.community/irukard/32/12_2.png) [@irukard](https://forum.sensor.community/u/irukard)\
**Post date:** [February 17, 2021, 5:46pm UTC](https://forum.sensor.community/t/problems-with-flashing/329/4 "2021-02-17T17:46:17Z")

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Some USB cables are power only (especially charging cables in bundle with wireless headphones and some power banks). Only 5V and GND without data lines.

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<div class="post-metadata">

**Author:** ![cleanair](https://forum.sensor.community/user_avatar/forum.sensor.community/cleanair/32/2371_2.png) [@cleanair](https://forum.sensor.community/u/cleanair)\
**Post date:** [February 18, 2021, 10:20am UTC](https://forum.sensor.community/t/problems-with-flashing/329/5 "2021-02-18T10:20:34Z")

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That seems to be the problem then. The first cable charged multiple devices just fine, but could not make the nodemcuv2 visible.