Thanks for a quick reply. I tried different USB ports and also usb c directly ( I have a Macbook with only TB3/USB-c ports). These are the last (of many
) lines after the dmesg command:
IOBluetoothHostControllerUARTTransport::SendUART mProvider->enqueueData() failed error=0xe00002d7
**** [IOBluetoothHostController][EnqueueRequestForController] -- SendHCIRequestToTransport failed, error (0xE00002D7) -- kIOReturnOffline
[IOBluetoothHostController][SendRawHCICommand] ### ERROR: EnqueueRequestForController failed (err=e00002d7) (repeatedly)
012851.829824 dfu-util@: IOUSBUserClientLegacy::start: missing entitlement com.apple.ibridge.control (repeatedly)
012851.835508 FiiO BTR3@14200000: AppleUSBDevice::ResetDevice: <software attempt to RESET>
I'm not sure what this means other than I see a lot of 'failed'..
[EDIT]
I tried a second time, now the last lines are different:
Starting poll type 4
Restarting poll type 4
Command 0x2 completed. inCount: 2 data:0x4Command 0x1 completed. inCount: 2 data:0x1101Command 0x16 completed. inCount: 2 data:0xc0Command 0xa completed. inCount: 2 data:0xf7fdCommand 0xb completed. inCount: 2 data:0xf933Command 0x12 completed. inCount: 2 data:0x18Command 0x13 completed. inCount: 2 data:0xffffCommand 0xf completed. inCount: 2 data:0x2beCommand 0x10 completed. inCount: 2 data:0x1ac7SmartBattery: finished polling type 4
[EDIT2]
and a third time, but now right after I ran the update attempt. I guessed the dmesg command could be something that looks back in recent history of the ports ?
014372.179928 FiiO BTR3@14320000: AppleUSBDevice::ResetDevice: <software attempt to RESET>
Starting poll type 4
Restarting poll type 4
Command 0x2 completed. inCount: 2 data:0x5Command 0x1 completed. inCount: 2 data:0x1011Command 0x16 completed. inCount: 2 data:0x80Command 0xa completed. inCount: 2 data:0x1230Command 0xb completed. inCount: 2 data:0x10b5Command 0x12 completed. inCount: 2 data:0xffffCommand 0x13 completed. inCount: 2 data:0x9dCommand 0xf completed. inCount: 2 data:0x22bCommand 0x10 completed. inCount: 2 data:0x1acaSmartBattery: finished polling type 4
AGC:: WindowServer started pid 157 WS count 3
AGC:: [WindowServer pid:157 mux-aware] starting, non-mux-aware app count 0 WS-ready 1 switch-state 0 IG FBs 0 EG FBs 1:1f power-state 0 4D idle HDA idle system-state 1 power-level 20:20 connect-change 0
AGC:: [WindowServer pid 157 mux-aware] exiting, non-mux-aware app count 0, runtime: 0:00:00.000
AGC:: WindowServer died pid 157 WS count 2
This last one looks a bit more informative although I have no clue what to do next
PS I tried on another macbook with native USB ports and El Capitan, but same issues. So it does not seem port / os version related.