@FiiO - my BTR5 has developed an oddity - the BTR5 connects via BT to my intended device - I get the "connect tone" and then almost immediately I get a 2nd "connect tone". And when that 2nd "connect tone" sounds I get no audio from the intended device. I can switch over to the "input" device and I hear the audio in low res single channel (mono), but the main connection audio is dead when I switch back to it (Windows 10 Sound Control Panel, selecting device). On my phone / tablet I only have the one connected BT device to work with, and I hear no audio.
On my Tablet I was connecting with BT LDAC just fine for many hours, and then out of the blue this problem started. The LDAC connection still showed up on the connected device, but the BTR5 after making that 2nd "connect tone" shows APTX as the connection. Tuning off LDAC option for the connection on the Tablet / Phone and reconnecting doesn't help. Unpairing and re-pairing without enabling LDAC doesn't work either. Each time I connect I get the "connect tone" and then immediately get a 2nd "connect tone" and no audio from the connected device. Plugging in the USB DAC works fine.
I have cleared the BTR5 pairings (on the BTR5) and re-paired on PC, Phone, Tablet - clearing the pairings (on each device) several times, and the same anomaly happens with each of them. I have turned off BT on each of the other devices - eventually I powered down all of my other devices in the house just in case something was grabbing the connection, and even with every device off when I power up the BTR5 I get that "connect tone" and APTX shows in the display.
I can connect USB DAC and it works fine, and on my PC when I disconnect my BTR5 is connected via BT but no audio comes through.
I tried this enough times that occasionally I get audio through BT connection as expected only to have BT audio stop working should I pause a video or change media, then I can't get the BT audio back.
The BTR5 hasn't frozen so the 10 second power button reset doesn't come into play - how do I reset the device in another way?
This anomaly also means I can't connect to the BTR5 via BT reliably to use the FiiO Control/Music app to reset except on a rare couple of times, and I used the reset to defaults and shutdown options, but that didn't help either.
I thought of re-installing the current 1.0.6 firmware again to see if that would reset the BTR5, but I didn't want to risk bricking the BTR5, as USB DAC mode works fine. Should I give that a try? Do you have a "1.0.7" alpha/beta I can try?
Anyone have any ideas or suggestions?