# How to use Microcom on FX30

**URL:** <https://forum.legato.io/t/how-to-use-microcom-on-fx30/5653>\
**Category:** Uncategorized\
**Created:** [March 12, 2021, 12:55am UTC](https://forum.legato.io/t/how-to-use-microcom-on-fx30/5653 "2021-03-12T00:55:09Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![carterwe](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.legato.io/carterwe/32/1211_2.png) [@carterwe](https://forum.legato.io/u/carterwe)\
**Post date:** [March 12, 2021, 12:55am UTC](https://forum.legato.io/t/how-to-use-microcom-on-fx30/5653/1 "2021-03-12T00:55:09Z")

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I have found a problem with microcom, i.e. microcom -E /dev/ttyAT, on some versions of Firmware for FX30 (I’m on my 3rd version try). I believe the problem is a bug in some versions of microcom and the work around for the buggy version is to simply leave out the -E, for example microcom /dev/ttyAT . so now we get no echo but our AT commands will be processed and we will get the response. As a point of reference my original Firmware version on the delivered card had the buggy microcom and a nonworking “cm data connect”. Then I upgraded to the latest firmware online, where microcom fully worked but cm data connect still did not. Then I got a firmware version from Sierra where “cm data connect” worked but my buggy microcom was back. However, I need a working connection more than I need Echo with microcom. So I will make do for now. My question:How best to get a working version of Microcom? Can I upgrade individually or is it part of the Firmware install and I need to find yet another version of Firmware where “everything” works?

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**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.legato.io/jyijyi/32/822_2.png) [@jyijyi](https://forum.legato.io/u/jyijyi)\
**Post date:** [March 12, 2021, 2:12am UTC](https://forum.legato.io/t/how-to-use-microcom-on-fx30/5653/2 "2021-03-12T02:12:51Z")

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I tried on WP76 module FW R13, I cannot use the -E option. Suggest you use ATE1 to enable echo.

root@swi-mdm9x28-wp:~# microcom /dev/ttyAT -E  
microcom: option requires an argument – ‘E’  
BusyBox v1.27.2 (2019-07-08 12:01:05 UTC) multi-call binary.

Usage: microcom [-d DELAY] [-t TIMEOUT] [-s SPEED] [-X] [-E] TTY  
root@swi-mdm9x28-wp:~# microcom /dev/ttyAT  
at  
OK  
ati3  
Manufacturer: Sierra Wireless, Incorporated  
Model: WP7609  
Revision: SWI9X07Y\_02.28.03.05 000000 jenkins 2019/07/08 11:04:16  
IMEI: 359782080100340  
IMEI SV: 6  
FSN: WA803370010910  
+GCAP: +CGSM

OK  
ate0  
OK

OK

OK  
at  
OK  
ati3  
Manufacturer: Sierra Wireless, Incorporated  
Model: WP7609  
Revision: SWI9X07Y\_02.28.03.05 000000 jenkins 2019/07/08 11:04:16  
IMEI: 359782080100340  
IMEI SV: 6  
FSN: WA803370010910  
+GCAP: +CGSM

OK

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<div class="post-metadata">

**Author:** ![carterwe](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.legato.io/carterwe/32/1211_2.png) [@carterwe](https://forum.legato.io/u/carterwe)\
**Post date:** [March 12, 2021, 4:28am UTC](https://forum.legato.io/t/how-to-use-microcom-on-fx30/5653/3 "2021-03-12T04:28:02Z")

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Thank you! ate1 worked great for me.