# XBee Modem not communicating with X-CTU **URL:** \ **Category:** XBee - Zigbee\ **Created:** [September 29, 2011, 3:45pm UTC](https://forums.digi.com/t/xbee-modem-not-communicating-with-x-ctu/768 "2011-09-29T15:45:01Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![bpmccain](https://avatars.discourse-cdn.com/v4/letter/b/ecd19e/32.png) [@bpmccain](https://forums.digi.com/u/bpmccain)\ **Post date:** [September 29, 2011, 3:45pm UTC](https://forums.digi.com/t/xbee-modem-not-communicating-with-x-ctu/768/1 "2011-09-29T15:45:01Z")
I have several Xbee Pro modems that are not communicating with X-CTU. When I tried to write a new function set to them, it failed halfway through, and now I can’t find any PC settings that will allow me to communicate with them. How can I restore these to factory defaults without being able to find the correct PC settings? This seems to happen far too often! Brian ---
**Author:** ![kavya](https://avatars.discourse-cdn.com/v4/letter/k/e480ec/32.png) [@kavya](https://forums.digi.com/u/kavya)\ **Post date:** [September 29, 2011, 4:10pm UTC](https://forums.digi.com/t/xbee-modem-not-communicating-with-x-ctu/768/2 "2011-09-29T16:10:39Z")
Hi, Which XBee module are you using? Select proper modem and Function set in the modem Configuration tab, enable “Always Update Firmware”, click on “Show Defaults” and click “Write”. For Series 1 modules try with the Baud Rate - 115200, You can download new versions, click on “Download new version” in the Modem Configuration tab. Series 2 modules supports ZigBee and ZNet 2.5, You can refer the following link [http://www.digi.com/pdf/chart\_xbee\_rf\_features.pdf](http://www.digi.com/pdf/chart_xbee_rf_features.pdf) Regards! ---
**Author:** ![bpmccain](https://avatars.discourse-cdn.com/v4/letter/b/ecd19e/32.png) [@bpmccain](https://forums.digi.com/u/bpmccain)\ **Post date:** [September 29, 2011, 7:36pm UTC](https://forums.digi.com/t/xbee-modem-not-communicating-with-x-ctu/768/3 "2011-09-29T19:36:07Z")
I am using XBee Pro Series 2 modules. Trying to set them up as XBP24-ZB Router Devices I still get unable to communicate errors. I have already tried all the different baud rates, even though I only ever set them up on 115200. The link you provided doesn’t go anywhere unfortunately. ---
**Author:** ![kavya](https://avatars.discourse-cdn.com/v4/letter/k/e480ec/32.png) [@kavya](https://forums.digi.com/u/kavya)\ **Post date:** [September 30, 2011, 11:37am UTC](https://forums.digi.com/t/xbee-modem-not-communicating-with-x-ctu/768/4 "2011-09-30T11:37:36Z")
Are you getting this error when you do Test/Query. The module may not be programmed properly. Try with the following Dont do Test/Query, go to Modem Configuration tab, select proper modem and Function set, check the version , latest version is 2X8C, click on “Show defaults”, enable Always Update Firmware and click “Write”. Hope this helps. ---
**Author:** ![WilliamSimps](https://avatars.discourse-cdn.com/v4/letter/w/6de8d8/32.png) [@WilliamSimps](https://forums.digi.com/u/WilliamSimps)\ **Post date:** [October 6, 2011, 8:53am UTC](https://forums.digi.com/t/xbee-modem-not-communicating-with-x-ctu/768/5 "2011-10-06T08:53:06Z")
If you use XBee Pro Series 2 modules, so exactly at which point error is occur. Tell me I’ll definitely help you. ---
**Author:** ![shahrj1988](https://avatars.discourse-cdn.com/v4/letter/s/c4cdca/32.png) [@shahrj1988](https://forums.digi.com/u/shahrj1988)\ **Post date:** [October 6, 2011, 7:07pm UTC](https://forums.digi.com/t/xbee-modem-not-communicating-with-x-ctu/768/6 "2011-10-06T19:07:38Z")
Check the below link: [http://m.youtube.com/watch?gl=IN&hl=en&client=mv-google&v=fxOqQZD-oaM&mobileflash=0](http://m.youtube.com/watch?gl=IN&hl=en&client=mv-google&v=fxOqQZD-oaM&mobileflash=0)