Mi Router 4A (100M International Edition V2) doesnt show 5G

System Infos:

Architecture	MediaTek MT7628AN ver:1 eco:2
Target Platform	ramips/mt76x8
Firmware Version	OpenWrt SNAPSHOT r29343-5501a502e4 / LuCI Master 25.115.80058~5af703e
Kernel Version	6.6.87

Kernel Log:

[    0.000000] Linux version 6.6.87 (builder@buildhost) (mipsel-openwrt-linux-musl-gcc (OpenWrt GCC 13.3.0 r29343-5501a502e4) 13.3.0, GNU ld (GNU Binutils) 2.42) #0 Sat Apr 26 17:13:32 2025
[    0.000000] Board has DDR2
[    0.000000] Analog PMU set to hw control
[    0.000000] Digital PMU set to hw control
[    0.000000] SoC Type: MediaTek MT7628AN ver:1 eco:2
[    0.000000] printk: bootconsole [early0] enabled
[    0.000000] CPU0 revision is: 00019655 (MIPS 24KEc)
[    0.000000] MIPS: machine is Xiaomi Mi Router 4A (100M International Edition V2)
[    0.000000] Initrd not found or empty - disabling initrd
[    0.000000] Primary instruction cache 64kB, VIPT, 4-way, linesize 32 bytes.
[    0.000000] Primary data cache 32kB, 4-way, PIPT, no aliases, linesize 32 bytes
[    0.000000] Zone ranges:
[    0.000000]   Normal   [mem 0x0000000000000000-0x0000000003ffffff]
[    0.000000] Movable zone start for each node
[    0.000000] Early memory node ranges
[    0.000000]   node   0: [mem 0x0000000000000000-0x0000000003ffffff]
[    0.000000] Initmem setup node 0 [mem 0x0000000000000000-0x0000000003ffffff]
[    0.000000] pcpu-alloc: s0 r0 d32768 u32768 alloc=1*32768
[    0.000000] pcpu-alloc: [0] 0 
[    0.000000] Kernel command line: console=ttyS0,115200 rootfstype=squashfs,jffs2
[    0.000000] Dentry cache hash table entries: 8192 (order: 3, 32768 bytes, linear)
[    0.000000] Inode-cache hash table entries: 4096 (order: 2, 16384 bytes, linear)
[    0.000000] Writing ErrCtl register=00070300
[    0.000000] Readback ErrCtl register=00070300
[    0.000000] Built 1 zonelists, mobility grouping on.  Total pages: 16256
[    0.000000] mem auto-init: stack:off, heap alloc:off, heap free:off
[    0.000000] Memory: 56288K/65536K available (4989K kernel code, 581K rwdata, 1564K rodata, 1240K init, 201K bss, 9248K reserved, 0K cma-reserved)
[    0.000000] SLUB: HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[    0.000000] NR_IRQS: 256
[    0.000000] intc: using register map from devicetree
[    0.000000] CPU Clock: 575MHz
[    0.000000] clocksource: MIPS: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 6647862422 ns
[    0.000002] sched_clock: 32 bits at 288MHz, resolution 3ns, wraps every 7469508094ns
[    0.007625] Calibrating delay loop... 380.92 BogoMIPS (lpj=1904640)
[    0.073502] pid_max: default: 32768 minimum: 301
[    0.086816] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes, linear)
[    0.093871] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes, linear)
[    0.112043] RCU Tasks Trace: Setting shift to 0 and lim to 1 rcu_task_cb_adjust=1 rcu_task_cpu_ids=1.
[    0.128726] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[    0.138275] futex hash table entries: 256 (order: -1, 3072 bytes, linear)
[    0.144905] pinctrl core: initialized pinctrl subsystem
[    0.153632] NET: Registered PF_NETLINK/PF_ROUTE protocol family
[    0.160308] thermal_sys: Registered thermal governor 'step_wise'
[    0.163748] /pinctrl: Fixed dependency cycle(s) with /pinctrl/pinctrl0
[    0.438662] PCI host bridge to bus 0000:00
[    0.442592] pci_bus 0000:00: root bus resource [mem 0x20000000-0x2fffffff]
[    0.449278] pci_bus 0000:00: root bus resource [io  0x10160000-0x1016ffff]
[    0.455869] pci_bus 0000:00: No busn resource found for root bus, will use [bus 00-ff]
[    0.463593] pci 0000:00:00.0: [14c3:0801] type 01 class 0x060400
[    0.469365] pci 0000:00:00.0: reg 0x10: [mem 0x00000000-0x7fffffff]
[    0.475427] pci 0000:00:00.0: reg 0x14: [mem 0x20200000-0x2020ffff]
[    0.481529] pci 0000:00:00.0: supports D1
[    0.485339] pci 0000:00:00.0: PME# supported from D0 D1 D3hot
[    0.493117] pci 0000:01:00.0: [14c3:7662] type 00 class 0x028000
[    0.498924] pci 0000:01:00.0: reg 0x10: [mem 0x00000000-0x000fffff 64bit]
[    0.505538] pci 0000:01:00.0: reg 0x30: [mem 0x00000000-0x0000ffff pref]
[    0.512070] pci 0000:01:00.0: PME# supported from D0 D3hot D3cold
[    0.518401] pci_bus 0000:01: busn_res: [bus 01-ff] end is updated to 01
[    0.524768] pci_bus 0000:00: busn_res: [bus 00-ff] end is updated to 01
[    0.531214] pci 0000:00:00.0: BAR 0: no space for [mem size 0x80000000]
[    0.537554] pci 0000:00:00.0: BAR 0: failed to assign [mem size 0x80000000]
[    0.544299] pci 0000:00:00.0: BAR 8: assigned [mem 0x20000000-0x200fffff]
[    0.550828] pci 0000:00:00.0: BAR 9: assigned [mem 0x20100000-0x201fffff pref]
[    0.557819] pci 0000:00:00.0: BAR 1: assigned [mem 0x20200000-0x2020ffff]
[    0.564367] pci 0000:01:00.0: BAR 0: assigned [mem 0x20000000-0x200fffff 64bit]
[    0.571447] pci 0000:01:00.0: BAR 6: assigned [mem 0x20100000-0x2010ffff pref]
[    0.578383] pci 0000:00:00.0: PCI bridge to [bus 01]
[    0.583190] pci 0000:00:00.0:   bridge window [mem 0x20000000-0x200fffff]
[    0.589720] pci 0000:00:00.0:   bridge window [mem 0x20100000-0x201fffff pref]
[    0.598732] clocksource: Switched to clocksource MIPS
[    0.617096] NET: Registered PF_INET protocol family
[    0.622210] IP idents hash table entries: 2048 (order: 2, 16384 bytes, linear)
[    0.631221] tcp_listen_portaddr_hash hash table entries: 1024 (order: 0, 4096 bytes, linear)
[    0.639452] Table-perturb hash table entries: 65536 (order: 6, 262144 bytes, linear)
[    0.646905] TCP established hash table entries: 1024 (order: 0, 4096 bytes, linear)
[    0.654324] TCP bind hash table entries: 1024 (order: 1, 8192 bytes, linear)
[    0.661143] TCP: Hash tables configured (established 1024 bind 1024)
[    0.667436] UDP hash table entries: 256 (order: 0, 4096 bytes, linear)
[    0.673792] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes, linear)
[    0.681694] NET: Registered PF_UNIX/PF_LOCAL protocol family
[    0.687247] PCI: CLS 80 bytes, default 32
[    0.697470] workingset: timestamp_bits=30 max_order=14 bucket_order=0
[    0.704346] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[    0.709984] jffs2: version 2.2 (NAND) (SUMMARY) (LZMA) (RTIME) (CMODE_PRIORITY) (c) 2001-2006 Red Hat, Inc.
[    0.727877] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 251)
[    0.736676] mt7621_gpio 10000600.gpio: registering 32 gpios
[    0.742577] mt7621_gpio 10000600.gpio: registering 32 gpios
[    0.748305] mt7621_gpio 10000600.gpio: registering 32 gpios
[    0.754593] Serial: 8250/16550 driver, 16 ports, IRQ sharing enabled
[    0.768347] printk: console [ttyS0] disabled
[    0.773262] 10000c00.uart0: ttyS0 at MMIO 0x10000c00 (irq = 28, base_baud = 2500000) is a 16550A
[    0.781850] printk: console [ttyS0] enabled
[    0.790281] printk: bootconsole [early0] disabled
[    0.837244] spi-mt7621 10000b00.spi: sys_freq: 191666666
[    0.850121] spi-nor spi0.0: gd25q128 (16384 Kbytes)
[    0.855305] 7 fixed-partitions partitions found on MTD device spi0.0
[    0.861879] OF: Bad cell count for /palmbus@10000000/spi@b00/flash@0/partitions
[    0.869373] OF: Bad cell count for /palmbus@10000000/spi@b00/flash@0/partitions
[    0.877150] Creating 7 MTD partitions on "spi0.0":
[    0.882076] 0x000000000000-0x000000020000 : "bootloader"
[    0.891714] 0x000000020000-0x000000030000 : "config"
[    0.899591] 0x000000030000-0x000000040000 : "factory"
[    0.907597] OF: Bad cell count for /palmbus@10000000/spi@b00/flash@0/partitions
[    0.915522] 0x000000040000-0x000000050000 : "crash"
[    0.923625] 0x000000050000-0x000000060000 : "cfg_bak"
[    0.931449] 0x000000060000-0x000000160000 : "overlay"
[    0.939309] 0x000000160000-0x000001000000 : "firmware"
[    0.947431] 2 uimage-fw partitions found on MTD device firmware
[    0.953551] Creating 2 MTD partitions on "firmware":
[    0.958597] 0x000000000000-0x0000002249f8 : "kernel"
[    0.963670] mtd: partition "kernel" doesn't end on an erase/write block -- force read-only
[    0.974707] 0x0000002249f8-0x000000ea0000 : "rootfs"
[    0.979880] mtd: partition "rootfs" doesn't start on an erase/write block boundary -- force read-only
[    0.991762] mtd: setting mtd8 (rootfs) as root device
[    0.997024] 1 squashfs-split partitions found on MTD device rootfs
[    1.003378] 0x0000005d0000-0x000000ea0000 : "rootfs_data"
[    1.045785] rt3050-esw 10110000.esw: mediatek esw at 0xb0110000, irq 25 initialized
[    1.054743] mtk_soc_eth 10100000.ethernet eth0: mediatek frame engine at 0xb0100000, irq 5
[    1.066829] NET: Registered PF_INET6 protocol family
[    1.080141] Segment Routing with IPv6
[    1.083996] In-situ OAM (IOAM) with IPv6
[    1.088142] NET: Registered PF_PACKET protocol family
[    1.093379] bridge: filtering via arp/ip/ip6tables is no longer available by default. Update your scripts to load br_netfilter if you need this.
[    1.106943] 8021q: 802.1Q VLAN Support v1.8
[    1.157386] clk: Disabling unused clocks
[    1.175078] VFS: Mounted root (squashfs filesystem) readonly on device 31:8.
[    1.189359] Freeing unused kernel image (initmem) memory: 1240K
[    1.195387] This architecture does not have kernel memory protection.
[    1.201967] Run /sbin/init as init process
[    1.206124]   with arguments:
[    1.206131]     /sbin/init
[    1.206139]   with environment:
[    1.206147]     HOME=/
[    1.206154]     TERM=linux
[    4.428878] rt3050-esw 10110000.esw: port 0 link up
[    4.991570] rt3050-esw 10110000.esw: port 2 link up
[    4.998940] init: Console is alive
[    5.002994] init: - watchdog -
[    7.548707] kmodloader: loading kernel modules from /etc/modules-boot.d/*
[    8.239667] gpio_button_hotplug: loading out-of-tree module taints kernel.
[    8.260221] kmodloader: done loading kernel modules from /etc/modules-boot.d/*
[    8.269852] init: - preinit -
[   15.088769] random: crng init done
[   19.464119] rt3050-esw 10110000.esw: port 0 link down
[   19.469296] rt3050-esw 10110000.esw: port 2 link down
[   22.893537] rt3050-esw 10110000.esw: port 0 link up
[   23.396585] rt3050-esw 10110000.esw: port 2 link up
[   25.537621] jffs2: notice: (414) jffs2_build_xattr_subsystem: complete building xattr subsystem, 29 of xdatum (27 unchecked, 2 orphan) and 37 of xref (2 dead, 0 orphan) found.
[   25.558362] mount_root: switching to jffs2 overlay
[   25.566774] overlayfs: upper fs does not support tmpfile.
[   25.586056] urandom-seed: Seeding with /etc/urandom.seed
[   25.671252] procd: - early -
[   25.674565] procd: - watchdog -
[   27.036701] procd: - watchdog -
[   27.042557] procd: - ubus -
[   28.134628] procd: - init -
[   33.461471] kmodloader: loading kernel modules from /etc/modules.d/*
[   35.866591] Loading modules backported from Linux version v6.12.6-0-ge9d65b48ce1a
[   35.874292] Backport generated by backports.git v6.1.110-1-35-g410656ef04d2
[   36.563003] mt76_wmac 10300000.wmac: ASIC revision: 76280001
[   37.258830] mt76_wmac 10300000.wmac: Firmware Version: 20151201
[   37.264882] mt76_wmac 10300000.wmac: Build Time: 20151201183641
[   37.272624] urngd: v1.0.2 started.
[   37.398786] mt76_wmac 10300000.wmac: firmware init done
[   37.566736] mt76_wmac 10300000.wmac: registering led 'mt76-phy0'
[   37.575002] ieee80211 phy0: Selected rate control algorithm 'minstrel_ht'
[   38.259704] PPP generic driver version 2.4.2
[   38.280354] NET: Registered PF_PPPOX protocol family
[   38.331218] kmodloader: done loading kernel modules from /etc/modules.d/*
[   65.407789] rt3050-esw 10110000.esw: port 0 link down
[   65.412966] rt3050-esw 10110000.esw: port 2 link down
[   68.833872] rt3050-esw 10110000.esw: port 0 link up
[   69.340491] rt3050-esw 10110000.esw: port 2 link up
[   77.984859] br-lan: port 1(eth0.1) entered blocking state
[   77.990460] br-lan: port 1(eth0.1) entered disabled state
[   77.995994] eth0.1: entered allmulticast mode
[   78.000485] mtk_soc_eth 10100000.ethernet eth0: entered allmulticast mode
[   78.007778] eth0.1: entered promiscuous mode
[   78.012201] mtk_soc_eth 10100000.ethernet eth0: entered promiscuous mode
[   78.109200] br-lan: port 1(eth0.1) entered blocking state
[   78.114734] br-lan: port 1(eth0.1) entered forwarding state```

![image|690x225](upload://rSiMMu6k6905SQoh7jrsTbpFq08.png)

Xiaomi Mi Router 4A (MIR4A) 100M No 5Ghz - Installing and Using OpenWrt - OpenWrt Forum

I followed this solution but no luck apk update && apk upgrade && apk add kmod-mt7615e kmod-mt7663-firmware-ap

fixed it with apk add kmod-mt76

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