AT+QCFG="rrc" explained and question

Hi, can AT+QCFG=“rrc” command be used to change the 3GPP release used by the UE when connecting to cell tower? I see that value can be changed from Release 8 to Release 99 on EC25 AT command PDF

you try to execute the AT command

AT+CSCON=1

Hi, I see that this command “AT+CSCON” is not available on EC25, however I was talking about AT+QCFG=“rrc" can you give me more details about this command? Thanks.