Hi Daniel, I hope you're doing well!
1.- A Bluetooth Beacon does not need to establish connection to get information. BLE beacons rely on advertising packets to transmit information, and are non-connectable.
2.- In the BLE Beacon SDK example, the information transmitted by the beacon can be changed by changing the value of adData1, located in the app_config.c source file of the project.
Please let me know if you need any more information.
Best regards,
Sebastian