Bluetooth firmware doesn't seem to load but may be working.

[Featherfoot]

I have a puzzling problem on my amd64 system:

I get a message on boot up that my bluetooth firmware file did not load, but when I look at the file it seems to be present.

jc@bopper:~$ dmesg | grep Bluetooth
[ 1.362586] Bluetooth: Core ver 2.22
[ 1.362707] Bluetooth: HCI device and connection manager initialized
[ 1.362772] Bluetooth: HCI socket layer initialized
[ 1.362833] Bluetooth: L2CAP socket layer initialized
[ 1.362896] Bluetooth: SCO socket layer initialized
[ 1.717122] Bluetooth: RFCOMM TTY layer initialized
[ 1.717184] Bluetooth: RFCOMM socket layer initialized
[ 1.717247] Bluetooth: RFCOMM ver 1.11
[ 1.717306] Bluetooth: HIDP (Human Interface Emulation) ver 1.2
[ 1.717370] Bluetooth: HIDP socket layer initialized
[ 4.090038] usb 1-1: Product: BCM920702 Bluetooth 4.0
[ 4.234948] Bluetooth: hci0: BCM: chip id 63
[ 4.238123] Bluetooth: hci0: BCM: features 0x07
[ 4.256050] Bluetooth: hci0: flyboy
[ 4.258625] Bluetooth: hci0: BCM20702A1 (001.002.014) build 1764
[ 4.258784] Bluetooth: hci0: BCM: Patch brcm/BCM20702A1-0a5c-21e8.hcd not found
jc@bopper:~$ ls -al /lib/firmware/brcm/BCM20702A1-0a5c-21e8.hcd
-rw-r--r-- 1 root root 35934 Jun 1 16:09 /lib/firmware/brcm/BCM20702A1-0a5c-21e8.hcd
jc@bopper:~$ uname -r
4.19.37-gentoo
jc@bopper:~$

I don't understand enough about bluetooth to interpret the Wiki, but when I do an hciconfig -a, I get the following, which seems to be correct.

bopper /etc/portage # hciconfig -a
hci0: Type: Primary Bus: USB
BD Address: 00:02:72:C8:5F:10 ACL MTU: 1021:8 SCO MTU: 64:1
UP RUNNING PSCAN ISCAN
RX bytes:5469 acl:36 sco:0 events:405 errors:0
TX bytes:3580 acl:36 sco:0 commands:277 errors:0
Features: 0xbf 0xfe 0xcf 0xfe 0xdb 0xff 0x7b 0x87
Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3
Link policy: RSWITCH SNIFF
Link mode: SLAVE ACCEPT
Name: 'flyboy'
Class: 0x1c0104
Service Classes: Rendering, Capturing, Object Transfer
Device Class: Computer, Desktop workstation
HCI Version: 4.1 (0x7) Revision: 0x16e4
LMP Version: 4.1 (0x7) Subversion: 0x220e
Manufacturer: Broadcom Corporation (15)

bopper /etc/portag

This implies that bluetooth is working. I am chasing this because I am unable to transfer files from my phone to my gentoo system.