# How to start Q64 in GR64 compatibility mode?

**URL:** <https://forum.sierrawireless.com/t/how-to-start-q64-in-gr64-compatibility-mode/2901>\
**Category:** Legacy AirPrime modules\
**Created:** [February 5, 2009, 4:27pm UTC](https://forum.sierrawireless.com/t/how-to-start-q64-in-gr64-compatibility-mode/2901 "2009-02-05T16:27:43Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![needbmw](https://avatars.discourse-cdn.com/v4/letter/n/6f9a4e/32.png) [@needbmw](https://forum.sierrawireless.com/u/needbmw)\
**Post date:** [February 5, 2009, 4:27pm UTC](https://forum.sierrawireless.com/t/how-to-start-q64-in-gr64-compatibility-mode/2901/1 "2009-02-05T16:27:43Z")

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Hello!  
Got two Q64-001 out of box.  
Need to replace GR-47 in simple AT-command mode device (send SMS when needed).  
But Q64 do not answer to AT commands in usual way, only garbage returned.  
Does it require additional flashing? GR-plugin is already installed or not?  
Thanks in advance.

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**Author:** ![Naz\_Jhb\_SA](https://avatars.discourse-cdn.com/v4/letter/n/ce73a5/32.png) [@Naz\_Jhb\_SA](https://forum.sierrawireless.com/u/Naz_Jhb_SA)\
**Post date:** [October 23, 2009, 2:24pm UTC](https://forum.sierrawireless.com/t/how-to-start-q64-in-gr64-compatibility-mode/2901/2 "2009-10-23T14:24:41Z")

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I had to order my module specifically with the GR64 plugin. YOu need to request it from your supplier.  
Then AT+CGMR to check version of plugin.  
AT+WOPEN to run application.  
And it sould run everytime it is restarted, until stopped.