Adb command to reset Motorola Android Devices

Hi all,


We are actually trying to find a manual solution to upgrade/reset factory default the Motorola android devices ET1/MC40/TC55 using the adb tool.


The closest command line we have found is as below :

adb shell am broadcast -a com.motorolasolutions.intent.action.UPDATE_PACKAGE -n com.motorolasolutions.recovery/.recoveryUpdateReceiver --es file /sdcard/


But the command doesn't return anything and it is not running.


I would really appreciate if we can find a way out of our problem.

Thank you all for your help.