# FXT009 : firmware upgrade 7.47 to 7.52 failed

**URL:** <https://forum.sierrawireless.com/t/fxt009-firmware-upgrade-7-47-to-7-52-failed/7088>\
**Category:** Legacy FX/FXT series\
**Created:** [March 16, 2014, 6:06am UTC](https://forum.sierrawireless.com/t/fxt009-firmware-upgrade-7-47-to-7-52-failed/7088 "2014-03-16T06:06:07Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![davidc](https://avatars.discourse-cdn.com/v4/letter/d/a183cd/32.png) [@davidc](https://forum.sierrawireless.com/u/davidc)\
**Post date:** [March 16, 2014, 6:06am UTC](https://forum.sierrawireless.com/t/fxt009-firmware-upgrade-7-47-to-7-52-failed/7088/1 "2014-03-16T06:06:07Z")

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Hiya,

Just to check - you have got the correct firmware for the FXT009?

As you noted, I would also stop any running OpenAT application (AT+WOPEN=0) before starting the firmware update. I would also erase the application from the modem (use AT+WOPEN) to ensure that there is enough space in the modem for the download. It might also be appropriate to resize the A&D data area (again, use AT+WOPEN - check teh AT Command guide for exact usage) before doing a XMODEM update.

And finally, you WILL need to recompile your OpenAT application against the 7.52 firmware for it to run on the updated modems.

I will admit that I only use the DWLWin method to do modem firmware updates…

ciao, Dave