Fiio btr3 app ios 9 or above). 3. FiiO Control 3. The FiiO Control app is available on Android and iOS. 9固件） 2. FiiO Control and Global PEQ The FiiO control app is how you can adjust various settings on the BTR13, such as exactly which Bluetooth codecs you want to use, and custom PEQ profiles. Added 'Bluetooth device control' setting in Settings menu (from now on you can go to this setting page to control all the FiiO Bluetooth devices with app control enabled, including Q5s and the older modes BTR3 & Q5); FiiO Control app is designed exclusively for controlling FiiO Bluetooth devices. Ideal for messing about the house, at the gym or on the go. ③For the iOS version: if the BTR3K did not show up in the “Bluetooth device control” list, click the “Refresh” icon in the upper right corner, or quit the app for a while and then reenter it. Upon opening the app, I was prompted to pair the BTR13 and install the latest firmware. jn13, w3u1, tdpvr, 2sbr, hkbdwu, 0hbq5, 2efi3, y3w1c, wa4hg, anhaj,