# X-CTU error

**URL:** <https://forums.digi.com/t/x-ctu-error/2310>\
**Category:** XBee - Zigbee\
**Created:** [March 27, 2008, 9:17am UTC](https://forums.digi.com/t/x-ctu-error/2310 "2008-03-27T09:17:10Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![ntx](https://avatars.discourse-cdn.com/v4/letter/n/77aa72/32.png) [@ntx](https://forums.digi.com/u/ntx)\
**Post date:** [March 27, 2008, 9:17am UTC](https://forums.digi.com/t/x-ctu-error/2310/1 "2008-03-27T09:17:10Z")

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When I try to read/Write an XBee series 2 configuration I got the following error:

Lost communication with modem  
Time out reading AT command. Stopping read parameters.  
Read parameters…Failed.

This is happening more often I upgraded from Vs. 1.x.3.x to 1.x.4.x.

My X-CTU version is 5.1.0.0

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<div class="post-metadata">

**Author:** ![michaelt](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.digi.com/michaelt/32/92_2.png) [@michaelt](https://forums.digi.com/u/michaelt)\
**Post date:** [March 27, 2008, 2:16pm UTC](https://forums.digi.com/t/x-ctu-error/2310/2 "2008-03-27T14:16:37Z")

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Where did this ZNet 2.5 radio come from? Which type of profile is on it currently and which firmware are you trying to write to it?

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<div class="post-metadata">

**Author:** ![ntx](https://avatars.discourse-cdn.com/v4/letter/n/77aa72/32.png) [@ntx](https://forums.digi.com/u/ntx)\
**Post date:** [March 27, 2008, 5:26pm UTC](https://forums.digi.com/t/x-ctu-error/2310/3 "2008-03-27T17:26:58Z")

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I purchased the module to my local distributor here in Italy. I do not wnat to upload firmware vs. 1.x.4.x is fine I only need to set some parameters.

In the attached file there is my configuration