Hi,
please try with following commands and then do hardware reset.
AT+QNVFD=“NV/item_files/modem/geran/grr/acq_db”
AT+QNVFD=“/nv/reg_files/modem/lte/rrc/csp/acq_db”
AT+QNVFD=“/nv/reg_files/modem/nb1/rrc/csp/acq_db”
AT+CRSM =214,28542,0,0,11,“FFFFFFFFFFFFFFFFFFFFFF”
AT+CRSM =214,28531,0,0,14,“FFFFFFFFFFFFFFFFFFFFFFFFFFFF”
AT+CRSM=214,28643,0,0,18,“FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF”