[https://wiki.teltonika-networks.com/wikibase/images/2/2e/Quectel_EC25EC21_AT_Commands_Manual_V1.2.pdf#page=15 2.4 AT+GMR Request TA Revision Identification of Software Release - page 14] | [https://wiki.teltonika-networks.com/wikibase/images/2/2e/Quectel_EC25EC21_AT_Commands_Manual_V1.2.pdf#page=15 2.4 AT+GMR Request TA Revision Identification of Software Release - page 14] |