Hello. This is HYBE. [Concert Pairing Guide] - At SEVENTEEN WORLD TOUR [NEW_], Your Light Stick will be paired with the stage for special effects. - You can proceed with concert pairing by tapping [Concert Mode] in the latest version of the Light Stick app (“SEVENTEEN LIGHT STICK VER3”). 📲 Download the Official Light Stick App https://qrco.de/SEVENTEEN_V3Pairng [Firmware Update Guide] - The firmwares for the SEVENTEEN Official Light Stick VER.3 and SEVENTEEN Official Light Stick VER.3 10th Anniv. have been updated. - To experience the enhanced performance, please update the firmware to the latest version. - The latest firmware version for the Light Stick VER.3 is 1.7. - The latest firmware version for the Light Stick VER.3 10th Anniv. is 1.7.1. [How to Update the Firmware] - Please run the latest version of the Light Stick App. (“SEVENTEEN LIGHT STICK VER3) - You can proceed with the firmware update by clicking the [Update Light Stick] button on the top right menu of the app. Please refer to the image below for more information. ※ Please use SEVENTEEN Light Stick VER.3 or Light Stick VER.3 10th Anniv. (SEVENTEEN Light Stick VER1 and VER2 do not support Light Stick effects.) ※ Pairing using the app can be done approximately one or two days before the concert. Please check your ticket before pairing your Light Stick. ※ On-site congestion on the day of the concert may delay the firmware update and pairing speed or cause them to fail. Please complete the firmware update and pairing before coming to the concert venue. ※ Replace old batteries with new alkaline batteries before using your Light Stick. (three AAA batteries) ※ Using old batteries without replacing them with new ones may cause the Light Stick to fade, or flash in different colors then go off during the concert. Please prepare extra batteries. ※ The Light Stick will remain paired during the concert even if the batteries are replaced, and the light effect will continue automatically. Thank you.