no seems to be NOK:
usb 1-1.2: new high-speed USB device number 4 using ehci-platform Bluetooth: hci0: rtl: examining hci_ver=08 hci_rev=000c lmp_ver=08 lmp_subver=8821 Bluetooth: hci0: rtl: loading rtl_bt/rtl8821a_fw.bin bluetooth hci0: Direct firmware load for rtl_bt/rtl8821a_fw.bin failed with error -2 Bluetooth: hci0: Failed to load rtl_bt/rtl8821a_fw.bin 8821cu: Unknown symbol cfg80211_connect_bss (err 0)
It is OK will check for another stick, don't invest too much time in this.
Indeed use both images, PLi for server
thanks