# Limesdr mini ,usb does not recognize,what is the reason?

**URL:** <https://discourse.myriadrf.org/t/limesdr-mini-usb-does-not-recognize-what-is-the-reason/3048>\
**Category:** LimeSDR\
**Created:** [23 July 2018 06:54 UTC](https://discourse.myriadrf.org/t/limesdr-mini-usb-does-not-recognize-what-is-the-reason/3048 "2018-07-23T06:54:23Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![haozi](https://avatars.discourse-cdn.com/v4/letter/h/5fc32e/32.png) [@haozi](https://discourse.myriadrf.org/u/haozi)\
**Post date:** [23 July 2018 06:54 UTC](https://discourse.myriadrf.org/t/limesdr-mini-usb-does-not-recognize-what-is-the-reason/3048/1 "2018-07-23T06:54:23Z")

</div>

Hello everyone, my limesdr mini is broken, usb does not recognize, led light has been showing red, fpga firmware can be downloaded using JTAG, what is the reason?what should I do? thank you！

---

<div class="post-metadata">

**Author:** ![chao](https://avatars.discourse-cdn.com/v4/letter/c/839c29/32.png) [@chao](https://discourse.myriadrf.org/u/chao)\
**Post date:** [26 July 2018 05:08 UTC](https://discourse.myriadrf.org/t/limesdr-mini-usb-does-not-recognize-what-is-the-reason/3048/2 "2018-07-26T05:08:04Z")

</div>

Hi haozi, I have the same problem with you. When I plug in my mini, then its led light becomes red, normally it should be red and yellow twinkle alternately. Do you know the solution now? Thanks!

 ![微信图片_20180726130757](https://yyz2.discourse-cdn.com/flex034/uploads/myriadrf/original/2X/8/8ea3b6d15edb8c0af2c34a64f524743d8d407a8f.jpg)

---

<div class="post-metadata">

**Author:** ![Nazia](https://yyz2.discourse-cdn.com/flex034/user_avatar/discourse.myriadrf.org/nazia/32/2078_2.png) [@Nazia](https://discourse.myriadrf.org/u/Nazia)\
**Post date:** [27 July 2018 03:17 UTC](https://discourse.myriadrf.org/t/limesdr-mini-usb-does-not-recognize-what-is-the-reason/3048/3 "2018-07-27T03:17:14Z")

</div>

If you are using windows, try it on windows 10. windows 7 doesn’t have the proper driver neither it allows to update. Then test if your board is okay with this test. [https://wiki.myriadrf.org/Testing\_the\_LimeSDR](https://wiki.myriadrf.org/Testing_the_LimeSDR)

This will generate a report and you will be sure if your board is okay or not.

Best,  
Nazia