LTE Module SeriesBG96 DFOTA User GuideBG96_DFOTA_User_Guide 6 / 162 Firmware Upgrade Procedure viaDFOTAThe following chart illustrates the firmware upgrade procedure via DFOTA when the firmware package isstored on HTTP(S) server.1. Get deltafirmware packageHTTP(S)Server4. Automatically downloadfrom HTTP(S) server viaLTE/GPRS networkLTE/GPRS(HTTP(S))Ext.MCUQuectelModule2. Put the package onHTTP(S) server3. Execute AT+QFOTADLcommand5. Automaticallyupgrade themoduleāsfirmwareFigure 1: Firmware Upgrade Procedure via DFOTAAs shown in the above figure, customers only need to perform the following steps to upgrade the firmwarewhen the firmware package is stored on HTTP(S) server: