cant decode SIB downlink using USRP B210

im trying to run "LTE Cell Search, MIB and SIB1 Recovery with Two Antennas" example from the LTE tool-box. im using usrp B210 and im trying to recieve an actual downlink signal from the air at central frequency 760.5Mhz which i know that exist.im managing to decode MIB and cell ID correctly but it failed to decode SIB1 and im getting EVM rms of about 200% which ive told i should expected for about 2-3%. i cant seems to get what the problem is since i didn't change the code at all exept for the central frequency. thank you