Bluetooth USB dongle fails to function moving from CB1 to CB2 on M8P

Hello, I am using the following Bluetooth 5.3 USB dongle on my M8P + CB2:
https://www.amazon.com/gp/product/B0BL3BTVFJ

It didn't work out of the box for the CB1, requiring that rtl8761bu_fw.bin be downloaded elsewhere and provided in /usr/lib/firmware/rtl_bt/ as running dmesg showed that the firmware was missing.

I am experiencing the same problem when using the CB2 now, however it instead calls for rtl8761a_fw.bin and its subsequent config. Once again, I grabbed the firmware from Realtek's driver repo, however the USB dongle still fails to load with the following output from dmesg:

> biqu@bigtreetech-cb2:~$ dmesg | grep -i blue
> [ 1.183458] Bluetooth: Core ver 2.22
> [ 1.183514] Bluetooth: HCI device and connection manager initialized
> [ 1.183527] Bluetooth: HCI socket layer initialized
> [ 1.183535] Bluetooth: L2CAP socket layer initialized
> [ 1.183573] Bluetooth: SCO socket layer initialized
> [ 3.332951] Bluetooth: RFCOMM socket layer initialized
> [ 3.332982] Bluetooth: RFCOMM ver 1.11
> [ 3.332993] Bluetooth: HIDP (Human Interface Emulation) ver 1.2
> [ 3.333000] Bluetooth: HIDP socket layer initialized
> [ 3.334675] [BT_RFKILL]: bluetooth_platdata_parse_dt: get property: uart_rts_gpios = 77.
> [ 3.334696] [BT_RFKILL]: bluetooth_platdata_parse_dt: get property: BT,reset_gpio = 80.
> [ 3.334706] [BT_RFKILL]: bluetooth_platdata_parse_dt: get property: BT,wake_gpio = 81.
> [ 3.334716] [BT_RFKILL]: bluetooth_platdata_parse_dt: get property: BT,wake_host_irq = 79.
> [ 4.139925] usb 5-1.2: Product: Bluetooth 5.3 Radio
> [ 10.445222] systemd[1]: /lib/systemd/system/rk3399-bluetooth.service:11: Support for option SysVStartPriority= has been removed and it is ignored
> [ 13.724299] Bluetooth: hci0: command 0x1001 tx timeout
> [ 21.834080] Bluetooth: hci0: RTL: HCI_OP_READ_LOCAL_VERSION failed (-110)

I've found other such cases online for other distros, and it seems like it's an issue when using an older kernel?
https://forum.libreelec.tv/thread/23452-how-to-install-mpow-bluetooth-dongle-driver/
https://gist.github.com/rometsch/dfd24fb09c85c1ad2f25223dc1481aaa