Hello @herbert.pan-Q @silvia can you please attach the latest firmware for this module?
Quectel
RG501Q-EU
Revision: RG501QEUAAR12A06M4G_SAGM
OK
AT+QGMR
RG501QEUAAR12A06M4G_SAGM_01.001.01.001
OK
Dear @Alessandro
Sorry about this, your firmware version is a customized firmware. We can’t share.
Please contact with your supplier.