# Full app downoad after "Error: Builder disconnected" message

**URL:** <https://forums.balena.io/t/full-app-downoad-after-error-builder-disconnected-message/2931>\
**Category:** Product support\
**Created:** [April 16, 2018, 10:02am UTC](https://forums.balena.io/t/full-app-downoad-after-error-builder-disconnected-message/2931 "2018-04-16T10:02:51Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![letrich](https://avatars.discourse-cdn.com/v4/letter/l/8dc957/32.png) [@letrich](https://forums.balena.io/u/letrich)\
**Post date:** [April 16, 2018, 10:02am UTC](https://forums.balena.io/t/full-app-downoad-after-error-builder-disconnected-message/2931/1 "2018-04-16T10:02:51Z")

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Hello,

I got “Error: Builder disconnected” message several days ago when I was playing with my test device.  
The app was built but not deployed. I have tried one more time and got the same error. When I tried a bit later with absolutely the same code the build was successfully deployed.

But this is not the worst. The whole 600+ megabytes app was downloaded again by the device. It is ok if I use this device with fast and cheap internet. But I am planning to use my devices with 3G modems. Bandwidth is limited. It is absolutely not acceptable to download the whole application each time the builder disconnects.