# Ground Control Installation Issues Communication Port

**URL:** <https://forums.maslowcnc.com/t/ground-control-installation-issues-communication-port/12743>\
**Category:** Software\
**Tags:** groundcontrol\
**Created:** [March 25, 2020, 11:27pm UTC](https://forums.maslowcnc.com/t/ground-control-installation-issues-communication-port/12743 "2020-03-25T23:27:24Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![madgrizzle](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/madgrizzle/32/1372_2.png) [@madgrizzle](https://forums.maslowcnc.com/u/madgrizzle)\
**Post date:** [March 26, 2020, 11:48am UTC](https://forums.maslowcnc.com/t/ground-control-installation-issues-communication-port/12743/3 "2020-03-26T11:48:46Z")

</div>

You do need to install the firmware. If you installed blink, you have wiped out any firmware that was loaded. Once you get the firmware installed, you should close the arduino ide because it can interfere and cause what you see.

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