I bought these Bridge units from Amazon couple weeks ago https://www.amazon.com/dp/B0CGLNNRRN?ref=ppx_yo2ov_dt_b_product_details&th=1
This is supposedly the company's website that makes devices http://www.iotcpe.com/
Been searching for information about the hardware And I have not found any FCC information on them Which is a little odd to me 
All appears to me is the device is using a modified Asus firmware
boot log of the device
Dec 27 04:09:03 syslogd started: BusyBox v1.24.2
Dec 27 04:09:03 iotcpe-CPE5G-A: firmware version: 3.4.6.0-V2_iotcpe
Dec 27 04:09:03 kernel: klogd started: BusyBox v1.24.2 (2022-10-14 12:08:30 CST)
Dec 27 04:09:03 kernel: Linux version 3.4.113 (padavan@hms) (gcc version 4.4.7 (GCC) ) #1 Fri Oct 14 12:07:31 CST 2022
Dec 27 04:09:03 kernel: MediaTek SoC: MT7620A, RevID: 0206, RAM: DDR2, XTAL: 20MHz
Dec 27 04:09:03 kernel: CPU/OCP/SYS frequency: 580/193/193 MHz
Dec 27 04:09:03 kernel: CPU revision is: 00019650 (MIPS 24KEc)
Dec 27 04:09:03 kernel: Determined physical RAM map:
Dec 27 04:09:03 kernel: memory: 04000000 @ 00000000 (usable)
Dec 27 04:09:03 kernel: Zone PFN ranges:
Dec 27 04:09:03 kernel: Normal 0x00000000 -> 0x00004000
Dec 27 04:09:03 kernel: Movable zone start PFN for each node
Dec 27 04:09:03 kernel: Early memory PFN ranges
Dec 27 04:09:03 kernel: 0: 0x00000000 -> 0x00004000
Dec 27 04:09:03 kernel: On node 0 totalpages: 16384
Dec 27 04:09:03 kernel: free_area_init_node: node 0, pgdat 80284f00, node_mem_map 81000000
Dec 27 04:09:03 kernel: Normal zone: 128 pages used for memmap
Dec 27 04:09:03 kernel: Normal zone: 0 pages reserved
Dec 27 04:09:03 kernel: Normal zone: 16256 pages, LIFO batch:3
Dec 27 04:09:03 kernel: Primary instruction cache 64kB, VIPT, 4-way, linesize 32 bytes.
Dec 27 04:09:03 kernel: Primary data cache 32kB, 4-way, PIPT, no aliases, linesize 32 bytes
Dec 27 04:09:03 kernel: pcpu-alloc: s0 r0 d32768 u32768 alloc=1*32768
Dec 27 04:09:03 kernel: pcpu-alloc: [0] 0
Dec 27 04:09:03 kernel: Built 1 zonelists in Zone order, mobility grouping on. Total pages: 16256
Dec 27 04:09:03 kernel: Kernel command line: console=ttyS0,115200n8 root=/dev/mtdblock4 rootfstype=squashfs
Dec 27 04:09:03 kernel: PID hash table entries: 256 (order: -2, 1024 bytes)
Dec 27 04:09:03 kernel: Dentry cache hash table entries: 8192 (order: 3, 32768 bytes)
Dec 27 04:09:03 kernel: Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)
Dec 27 04:09:03 kernel: Writing ErrCtl register=0002a0c9
Dec 27 04:09:03 kernel: Readback ErrCtl register=0002a0c9
Dec 27 04:09:03 kernel: Memory: 62100k/65536k available (2257k kernel code, 3436k reserved, 323k data, 168k init, 0k highmem)
Dec 27 04:09:03 kernel: NR_IRQS:40
Dec 27 04:09:03 kernel: console [ttyS0] enabled
Dec 27 04:09:03 kernel: Calibrating delay loop... 385.02 BogoMIPS (lpj=770048)
Dec 27 04:09:03 kernel: pid_max: default: 32768 minimum: 301
Dec 27 04:09:03 kernel: Mount-cache hash table entries: 512
Dec 27 04:09:03 kernel: NET: Registered protocol family 16
Dec 27 04:09:03 kernel: bio: create slab <bio-0> at 0
Dec 27 04:09:03 kernel: PCI host bridge to bus 0000:00
Dec 27 04:09:03 kernel: pci_bus 0000:00: root bus resource [mem 0x20000000-0x2fffffff]
Dec 27 04:09:03 kernel: pci_bus 0000:00: root bus resource [io 0x10160000-0x1016ffff]
Dec 27 04:09:03 kernel: pci 0000:00:00.0: [1814:0801] type 01 class 0x060400
Dec 27 04:09:03 kernel: pci 0000:00:00.0: reg 0x10: [mem 0x00000000-0x7fffffff]
Dec 27 04:09:03 kernel: pci 0000:00:00.0: supports D1
Dec 27 04:09:03 kernel: pci 0000:00:00.0: PME# supported from D0 D1 D3hot
Dec 27 04:09:03 kernel: pci 0000:00:00.0: bridge configuration invalid ([bus 00-00]), reconfiguring
Dec 27 04:09:03 kernel: pci 0000:01:00.0: [14c3:7662] type 00 class 0x028000
Dec 27 04:09:03 kernel: pci 0000:01:00.0: reg 0x10: [mem 0x00000000-0x000fffff 64bit]
Dec 27 04:09:03 kernel: pci 0000:01:00.0: reg 0x30: [mem 0x00000000-0x0000ffff pref]
Dec 27 04:09:03 kernel: pci 0000:01:00.0: PME# supported from D0 D3hot D3cold
Dec 27 04:09:03 kernel: pci 0000:00:00.0: BAR 0: can't assign mem (size 0x80000000)
Dec 27 04:09:03 kernel: pci 0000:00:00.0: BAR 8: assigned [mem 0x20000000-0x200fffff]
Dec 27 04:09:03 kernel: pci 0000:00:00.0: BAR 9: assigned [mem 0x20100000-0x201fffff pref]
Dec 27 04:09:03 kernel: pci 0000:01:00.0: BAR 0: assigned [mem 0x20000000-0x200fffff 64bit]
Dec 27 04:09:03 kernel: pci 0000:01:00.0: BAR 6: assigned [mem 0x20100000-0x2010ffff pref]
Dec 27 04:09:03 kernel: pci 0000:00:00.0: PCI bridge to [bus 01-01]
Dec 27 04:09:03 kernel: pci 0000:00:00.0: bridge window [mem 0x20000000-0x200fffff]
Dec 27 04:09:03 kernel: pci 0000:00:00.0: bridge window [mem 0x20100000-0x201fffff pref]
Dec 27 04:09:03 kernel: PCI: Enabling device 0000:00:00.0 (0000 -> 0002)
Dec 27 04:09:03 kernel: Switching to clocksource MIPS
Dec 27 04:09:03 kernel: NET: Registered protocol family 2
Dec 27 04:09:03 kernel: IP route cache hash table entries: 1024 (order: 0, 4096 bytes)
Dec 27 04:09:03 kernel: TCP established hash table entries: 2048 (order: 2, 16384 bytes)
Dec 27 04:09:03 kernel: TCP bind hash table entries: 2048 (order: 1, 8192 bytes)
Dec 27 04:09:03 kernel: TCP: Hash tables configured (established 2048 bind 2048)
Dec 27 04:09:03 kernel: TCP: reno registered
Dec 27 04:09:03 kernel: UDP hash table entries: 256 (order: 0, 4096 bytes)
Dec 27 04:09:03 kernel: NET: Registered protocol family 1
Dec 27 04:09:03 kernel: PCI: CLS 32 bytes, default 32
Dec 27 04:09:03 kernel: squashfs: version 4.0 (2009/01/31) Phillip Lougher
Dec 27 04:09:03 kernel: msgmni has been set to 121
Dec 27 04:09:03 kernel: io scheduler noop registered (default)
Dec 27 04:09:03 kernel: Serial: 8250/16550 driver, 1 ports, IRQ sharing disabled
Dec 27 04:09:03 kernel: serial8250: ttyS0 at MMIO 0x10000c00 (irq = 20) is a 16550A
Dec 27 04:09:03 kernel: Ralink GPIO driver initialized. Number of GPIO: 73, GPIO mode: 0058173D
Dec 27 04:09:03 kernel: loop: module loaded
Dec 27 04:09:03 kernel: Ralink SPI flash driver, SPI clock: 48MHz
Dec 27 04:09:03 kernel: SPI flash chip: W25Q64 (ef 4017ef40) (8192 Kbytes)
Dec 27 04:09:03 kernel: Creating 7 MTD partitions on "raspi":
Dec 27 04:09:03 kernel: 0x000000000000-0x000000030000 : "Bootloader"
Dec 27 04:09:03 kernel: 0x000000030000-0x000000040000 : "Config"
Dec 27 04:09:03 kernel: 0x000000040000-0x000000050000 : "Factory"
Dec 27 04:09:03 kernel: 0x000000050000-0x00000013c220 : "Kernel"
Dec 27 04:09:03 kernel: 0x00000013c220-0x0000007c0000 : "RootFS"
Dec 27 04:09:03 kernel: 0x0000007c0000-0x000000800000 : "Storage"
Dec 27 04:09:03 kernel: 0x000000050000-0x000000800000 : "Firmware_Stub"
Dec 27 04:09:03 kernel: Ralink APSoC Ethernet Driver v3.2.4 (raeth)
Dec 27 04:09:03 kernel: raeth: PDMA RX ring 256, PDMA TX ring 512. Max packet size 1536
Dec 27 04:09:03 kernel: raeth: NAPI support, weight 32
Dec 27 04:09:03 kernel: raeth: Byte Queue Limits (BQL) support
Dec 27 04:09:03 kernel: PPP generic driver version 2.4.2
Dec 27 04:09:03 kernel: PPP MPPE Compression module registered
Dec 27 04:09:03 kernel: NET: Registered protocol family 24
Dec 27 04:09:03 kernel: PPTP driver version 0.8.5
Dec 27 04:09:03 kernel: nf_conntrack version 0.5.0 (16384 buckets, 32768 max)
Dec 27 04:09:03 kernel: xt_time: kernel timezone is -0000
Dec 27 04:09:03 kernel: Bridge firewalling registered
Dec 27 04:09:03 kernel: gre: GRE over IPv4 demultiplexor driver
Dec 27 04:09:03 kernel: ip_tables: (C) 2000-2006 Netfilter Core Team
Dec 27 04:09:03 kernel: TCP: cubic registered
Dec 27 04:09:03 kernel: NET: Registered protocol family 17
Dec 27 04:09:03 kernel: L2TP core driver, V2.0
Dec 27 04:09:03 kernel: PPPoL2TP kernel driver, V2.0
Dec 27 04:09:03 kernel: 8021q: 802.1Q VLAN Support v1.8
Dec 27 04:09:03 kernel: ASUS NVRAM, v0.08. Available space: 61440. Integrity: OK
Dec 27 04:09:03 kernel: VFS: Mounted root (squashfs filesystem) readonly on device 31:4.
Dec 27 04:09:03 kernel: Freeing unused kernel memory: 168k freed
Dec 27 04:09:03 kernel: Algorithmics/MIPS FPU Emulator v1.5
Dec 27 04:09:03 kernel: PCI: Enabling device 0000:01:00.0 (0000 -> 0002)
Dec 27 04:09:03 kernel: MT76x2 AP Driver version: 3.0.5.0
Dec 27 04:09:03 kernel: raeth: HW IP/TCP/UDP checksum RX/TX offload enabled
Dec 27 04:09:03 kernel: raeth: HW VLAN TX offload enabled
Dec 27 04:09:03 kernel: raeth: HW Scatter/Gather TX offload enabled
Dec 27 04:09:03 kernel: Unknown EPHY (937C:4032) detected on MDIO addr 0x06
Dec 27 04:09:03 kernel: mtk_esw - hw bridge: LLLLL
Dec 27 04:09:03 kernel: mtk_esw - set broadcast storm control rate as: 10 mbps
Dec 27 04:09:03 kernel: device eth2.1 entered promiscuous mode
Dec 27 04:09:03 kernel: device eth2 entered promiscuous mode
Dec 27 04:09:05 kernel: device rai0 entered promiscuous mode
Dec 27 04:09:06 kernel: br0: port 2(rai0) entered forwarding state
Dec 27 04:09:06 kernel: br0: port 1(eth2.1) entered forwarding state
Dec 27 04:09:06 kernel: mtk_esw - software IGMP/MLD snooping: 1
Dec 27 04:09:06 httpd[167]: Server listening port 80 (HTTP).
Dec 27 04:09:08 kernel: br0: port 2(rai0) entered forwarding state
Dec 27 04:09:08 kernel: br0: port 1(eth2.1) entered forwarding state
Dec 27 04:09:16 NTP Client: Synchronizing time to ntp1.aliyun.com.
Dec 27 04:09:16 WiFi scheduler: 2.4GHz radio: ON
Dec 30 10:50:43 NTP Client: System time changed, offset: 283285.221454s
Dec 30 11:03:04 kernel: mtk_esw - LAN1 link speed: Auto, flow control: ON
Dec 30 11:03:25 kernel: mtk_esw - LAN1 link speed: Auto, flow control: ON
That is as far as I've gotten with the devices
Any advice will be appreciated on which firmware did you use with these devices