Hi I think this patch is cauisng issues with older firmware Bus 003 Device 002: ID 13d3:3563 IMC Networks Wireless_Device [ 0.315064] Bluetooth: Core ver 2.22 [ 0.315064] NET: Registered PF_BLUETOOTH protocol family [ 0.315064] Bluetooth: HCI device and connection manager initialized [ 0.315064] Bluetooth: HCI socket layer initialized [ 0.315064] Bluetooth: L2CAP socket layer initialized [ 0.315064] Bluetooth: SCO socket layer initialized [ 4.670811] Bluetooth: RFCOMM TTY layer initialized [ 4.671029] Bluetooth: RFCOMM socket layer initialized [ 4.671790] Bluetooth: RFCOMM ver 1.11 [ 4.673416] Bluetooth: BNEP (Ethernet Emulation) ver 1.3 [ 4.673659] Bluetooth: BNEP filters: protocol multicast [ 4.673895] Bluetooth: BNEP socket layer initialized [ 4.674125] Bluetooth: HIDP (Human Interface Emulation) ver 1.2 [ 4.674360] Bluetooth: HIDP socket layer initialized [ 5.016365] bluetooth hci0: Direct firmware load for mediatek/BT_RAM_CODE_MT7961_1a_2_hdr.bin failed with error -2 [ 5.017163] Bluetooth: hci0: Failed to load firmware file (-2) [ 5.017557] Bluetooth: hci0: Failed to set up firmware (-2) [ 5.018129] Bluetooth: hci0: HCI Enhanced Setup Synchronous Connection command is advertised, but not supported. The correct name should be mediatek/BT_RAM_CODE_MT7961_1_2_hdr.bin Reverting this patch fixes things Cheers Mike
