# SL6087 problem with Target Management

**URL:** <https://forum.sierrawireless.com/t/sl6087-problem-with-target-management/5648>\
**Category:** Development tools\
**Created:** [June 8, 2012, 12:55am UTC](https://forum.sierrawireless.com/t/sl6087-problem-with-target-management/5648 "2012-06-08T00:55:18Z")\
**Posts on this page:** 1\
**Showing post:** 1

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**Author:** ![davand043](https://avatars.discourse-cdn.com/v4/letter/d/9fc29f/32.png) [@davand043](https://forum.sierrawireless.com/u/davand043)\
**Post date:** [June 8, 2012, 12:55am UTC](https://forum.sierrawireless.com/t/sl6087-problem-with-target-management/5648/1 "2012-06-08T00:55:18Z")

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When connect the module and open the port, appears the next error  
“Switch to Development mode and check =\> ERROR: An error ocurred during HAPC AT test  
Switch to Development mode and check =\> ERROR: An error ocurred during HAPC AT test  
Switch to Development mode =\> DONE: Success  
Pause : 300 milliseconds =\> DONE: Success  
Check dev mode unlocked =\> ERROR: An error ocurred during HAPC AT test  
Switch to Development mode and check =\> ERROR: An error ocurred during HAPC AT test  
Switch to Development mode =\> DONE: Success  
Pause : 300 milliseconds =\> DONE: Success  
Check dev mode unlocked =\> ERROR: An error ocurred during HAPC AT test  
Switch to Development mode and check =\> ERROR: An error ocurred during HAPC AT test  
Switch to Development mode =\> DONE: Success  
Pause : 300 milliseconds =\> DONE: Success  
Check dev mode unlocked =\> ERROR: An error ocurred during HAPC AT test”

I don’t know how to connect the SL6087 with the developer studio.

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