Some version info from the binary:

 BCM4345C5 - Ampak_CL1.5 UART 37.4 MHz BT 5.0 [Baseline: 0021]

 fw_bcm43456c5*.bin - version: 7.45.96.0 CRC: 1d0e37c2 Date:
 Fri 2017-06-16 12:39:23 CST Ucode Ver: 1043.2070 FWID: 01-1813af84

 nvram_ap6256.txt - AP6256_NVRAM_V1.1_08252017

 Tested on ROCK Pi 4 model B.
Signed-off-by: brian <brian@vamrs.com>