How to build the MBPA driver to Android 12 for EM9191

I follow the readme.txt to install MBPA, Android kernel can detect the module and I use echo “AT” to send the command & cat the return “OK”. But the system can’t get the IMEI from the kernel.

Who can provide the guide to solve the issue?

Dear @ben2 ,

Thanks for raising the ticket
As my understanding, MBPA packages are not publicly provided on Sierra source page, the customer needs to sign SLA to get the source. In case you got MBPA packages and observed some problems while using it, please try to contact technical support via email at for further support