# Mini Cura 2.6.63 windows 7 wont communicate USB

**URL:** <https://forum.lulzbot.com/t/mini-cura-2-6-63-windows-7-wont-communicate-usb/5476>\
**Category:** Software\
**Created:** [January 4, 2018, 9:05pm UTC](https://forum.lulzbot.com/t/mini-cura-2-6-63-windows-7-wont-communicate-usb/5476 "2018-01-04T21:05:09Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![drdownen](https://avatars.discourse-cdn.com/v4/letter/d/e9bcb4/32.png) [@drdownen](https://forum.lulzbot.com/u/drdownen)\
**Post date:** [January 4, 2018, 9:05pm UTC](https://forum.lulzbot.com/t/mini-cura-2-6-63-windows-7-wont-communicate-usb/5476/1 "2018-01-04T21:05:09Z")

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FYI - Cura 2.6.63 doesn’t work and 21.08 does. Read below.

I uninstalled a working version Cura 21.08 to get the latest Cura software 2.6.63 for a LulzBot Mini running software on a Dell Precision Windows 7 laptop. Windows 7 recognized the Mini and gave it USB comm port 13 (In Device Manager --\> 3D Printer powered by RAMBo) plus the little beeps as you plugged and unplugged the USB cable. Cura 2.6.63 was unable to connect to the Mini even after a reboot. I gave it plenty of time to search for the comm port as i grabbed a sandwich waiting on it. I then uninstalled and reinstalled the software and it still was unable to recognize the Mini. I then uninstalled deleted the folder out off AppData/Roaming/Cura?? and installed the next older version Cura 2.6.52 and had the same issue. I then uninstalled everything and went back to 21.08 and everything works correctly.

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**Author:** ![Orias](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.lulzbot.com/orias/32/3_2.png) [@Orias](https://forum.lulzbot.com/u/Orias)\
**Post date:** [January 4, 2018, 9:46pm UTC](https://forum.lulzbot.com/t/mini-cura-2-6-63-windows-7-wont-communicate-usb/5476/2 "2018-01-04T21:46:05Z")

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The latest versions of Cura LulzBot Edition require updated firmware to communicate with the printer. Install Cura LE version 2.6.63.

Select the Settings menu \> Printer \> Manage Printer(s) \> Upgrade Firmware \> Automatically Upgrade Firmware to start the firmware update process.

After installing the firmware, if you still can’t communicate with the printer, go to Preferences \> Configure Cura. Under Developer Settings, select “Allow connection to…”.

 ![Selection_326.png](https://us1.discourse-cdn.com/flex020/uploads/lulzbot/original/2X/0/0f62ee6ece94072ca8188ba98352ba6f53b79fb7.png)  
Reach out to our support team for more assistance, at [LulzBot.com/Support](https://lulzbot.com/support).