Do we have to upgrade mc7455 to FW 02.24.05.06

IoT Modules MC/EM Series
1

Hi,

We just received a PRODUCT CHANGE NOTIFICATION SUMMARY from our supplier.

It states “FW 02.24.05.06 will reduce the risk of damaging and corrupting EM7455 and MC7455 modules when
the recommended power off timing requirement is not followed.”

Does this problem have to do with disabling module by bringing W_DISABLE_N low and keeping USB_D+ high for more than 25s? Or there is some other power off timing requirement that it deals with?

Thank you,
Dmitri

2

Hi DmitriK,

Please contact your Technical support in SWI to provide you the solution.
For disabling or power off the module, kindly refer to PTS, below mentioned is the link:
https://source.sierrawireless.com/resources/airprime/minicard/74xx/airprime_mc7455_product_technical_specification/

Thanks & Regards,
Moderator