okay apparently I was too slow with dumping the mtd partition 
MT7610 looks good actually, iw wlan0 scan
works perfectly and will list 5GHz networks 
Serial bootlog until console is disabled:
CDM56CDL_U03 Jboot B796
JRecovery Version R1.2 2013/10/04 18:32
SPI FLASH: MX25l12805d 16M
.
...Boot addr = 0x80400000
...................
Starting kernel @80000000...
[ 0.000000] Linux version 4.14.78 (krolik@ubuntu-VirtualBox) (gcc version 7.3.0 (OpenWrt GCC 7.3.0 r6894+1283-547042398a)) #0 Thu Nov 22 17:21:22 2018
[ 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 MT7620A ver:2 eco:4
[ 0.000000] bootconsole [early0] enabled
[ 0.000000] CPU0 revision is: 00019650 (MIPS 24KEc)
[ 0.000000] MIPS: machine is D-Link dir-510l
[ 0.000000] Determined physical RAM map:
[ 0.000000] memory: 08000000 @ 00000000 (usable)
[ 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 0x0000000000000000-0x0000000007ffffff]
[ 0.000000] Movable zone start for each node
[ 0.000000] Early memory node ranges
[ 0.000000] node 0: [mem 0x0000000000000000-0x0000000007ffffff]
[ 0.000000] Initmem setup node 0 [mem 0x0000000000000000-0x0000000007ffffff]
[ 0.000000] random: get_random_bytes called from start_kernel+0x8c/0x474 with crng_init=0
[ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 32512
[ 0.000000] Kernel command line: console=ttyS0,57600 rootfstype=squashfs,jffs2
[ 0.000000] PID hash table entries: 512 (order: -1, 2048 bytes)
[ 0.000000] Dentry cache hash table entries: 16384 (order: 4, 65536 bytes)
[ 0.000000] Inode-cache hash table entries: 8192 (order: 3, 32768 bytes)
[ 0.000000] Writing ErrCtl register=00075952
[ 0.000000] Readback ErrCtl register=00075952
[ 0.000000] Memory: 124832K/131072K available (3611K kernel code, 172K rwdata, 840K rodata, 168K init, 207K bss, 6240K 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] CPU Clock: 580MHz
[ 0.000000] clocksource: systick: mask: 0xffff max_cycles: 0xffff, max_idle_ns: 583261500 ns
[ 0.000000] systick: enable autosleep mode
[ 0.000000] systick: running - mult: 214748, shift: 32
[ 0.000000] clocksource: MIPS: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 6590553264 ns
[ 0.000010] sched_clock: 32 bits at 290MHz, resolution 3ns, wraps every 7405115902ns
[ 0.015471] Calibrating delay loop... 385.84 BogoMIPS (lpj=1929216)
[ 0.087711] pid_max: default: 32768 minimum: 301
[ 0.097105] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.110123] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.129658] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[ 0.149139] futex hash table entries: 256 (order: -1, 3072 bytes)
[ 0.161306] pinctrl core: initialized pinctrl subsystem
[ 0.172141] NET: Registered protocol family 16
[ 0.663935] PCI host bridge /pcie@10140000 ranges:
[ 0.673327] MEM 0x0000000020000000..0x000000002fffffff
[ 0.683700] IO 0x0000000010160000..0x000000001016ffff
[ 0.711681] rt2880_gpio 10000600.gpio: registering 24 gpios
[ 0.722715] rt2880_gpio 10000600.gpio: registering 24 irq handlers
[ 0.735746] PCI host bridge to bus 0000:00
[ 0.743743] pci_bus 0000:00: root bus resource [mem 0x20000000-0x2fffffff]
[ 0.757462] pci_bus 0000:00: root bus resource [io 0xffffffff]
[ 0.769187] pci_bus 0000:00: root bus resource [??? 0x00000000 flags 0x0]
[ 0.782687] pci_bus 0000:00: No busn resource found for root bus, will use [bus 00-ff]
[ 0.798868] pci 0000:00:00.0: bridge configuration invalid ([bus 00-00]), reconfiguring
[ 0.815730] pci 0000:00:00.0: BAR 0: no space for [mem size 0x80000000]
[ 0.828786] pci 0000:00:00.0: BAR 0: failed to assign [mem size 0x80000000]
[ 0.842593] pci 0000:00:00.0: BAR 8: assigned [mem 0x20000000-0x201fffff]
[ 0.856094] pci 0000:00:00.0: BAR 1: assigned [mem 0x20200000-0x2020ffff]
[ 0.869604] pci 0000:01:00.0: BAR 0: assigned [mem 0x20000000-0x200fffff]
[ 0.883099] pci 0000:01:00.1: BAR 0: assigned [mem 0x20100000-0x201fffff]
[ 0.896596] pci 0000:00:00.0: PCI bridge to [bus 01]
[ 0.906447] pci 0000:00:00.0: bridge window [mem 0x20000000-0x201fffff]
[ 0.923779] clocksource: Switched to clocksource systick
[ 0.935360] NET: Registered protocol family 2
[ 0.944754] TCP established hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.958528] TCP bind hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.971115] TCP: Hash tables configured (established 1024 bind 1024)
[ 0.983938] UDP hash table entries: 256 (order: 0, 4096 bytes)
[ 0.995443] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
[ 1.008121] NET: Registered protocol family 1
[ 1.019475] rt-timer 10000100.timer: maximum frequency is 1220Hz
[ 1.032182] Crashlog allocated RAM at address 0x3f00000
[ 1.044285] workingset: timestamp_bits=30 max_order=15 bucket_order=0
[ 1.062264] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[ 1.073768] jffs2: version 2.2 (NAND) (SUMMARY) (LZMA) (RTIME) (CMODE_PRIORITY) (c) 2001-2006 Red Hat, Inc.
[ 1.103241] io scheduler noop registered
[ 1.110947] io scheduler deadline registered (default)
[ 1.122089] gpio-export gpio_export: 3 gpio(s) exported
[ 1.132660] Serial: 8250/16550 driver, 2 ports, IRQ sharing disabled
[ 1.146131] console [ttyS0] disabled
[ 1.153122] 10000500.uart: ttyS0 at MMIO 0x10000500 (irq = 13, base_baud = 2500000) is a Palmchip BK-3103
[ 1.172205] console [ttyS0] enabled
[ 1.185907] bootconsole [early0] disabled
Connecting via ssh:
login as: root
BusyBox v1.29.3 () built-in shell (ash)
_______ ________ __
| |.-----.-----.-----.| | | |.----.| |_
| - || _ | -__| || | | || _|| _|
|_______|| __|_____|__|__||________||__| |____|
|__| W I R E L E S S F R E E D O M
-----------------------------------------------------
OpenWrt SNAPSHOT, r6719+1661-a656ea0bdb
-----------------------------------------------------
=== WARNING! =====================================
There is no root password defined on this device!
Use the "passwd" command to set up a new password
in order to prevent unauthorized SSH logins.
--------------------------------------------------
root@OpenWrt:~# dmesg
[ 0.000000] Linux version 4.14.78 (krolik@ubuntu-VirtualBox) (gcc version 7.3.0 (OpenWrt GCC 7.3.0 r6894+1283-547042398a)) #0 Thu Nov 22 17:21:22 2018
[ 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 MT7620A ver:2 eco:4
[ 0.000000] bootconsole [early0] enabled
[ 0.000000] CPU0 revision is: 00019650 (MIPS 24KEc)
[ 0.000000] MIPS: machine is D-Link dir-510l
[ 0.000000] Determined physical RAM map:
[ 0.000000] memory: 08000000 @ 00000000 (usable)
[ 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 0x0000000000000000-0x0000000007ffffff]
[ 0.000000] Movable zone start for each node
[ 0.000000] Early memory node ranges
[ 0.000000] node 0: [mem 0x0000000000000000-0x0000000007ffffff]
[ 0.000000] Initmem setup node 0 [mem 0x0000000000000000-0x0000000007ffffff]
[ 0.000000] On node 0 totalpages: 32768
[ 0.000000] free_area_init_node: node 0, pgdat 80483730, node_mem_map 81000040
[ 0.000000] Normal zone: 256 pages used for memmap
[ 0.000000] Normal zone: 0 pages reserved
[ 0.000000] Normal zone: 32768 pages, LIFO batch:7
[ 0.000000] random: get_random_bytes called from start_kernel+0x8c/0x474 with crng_init=0
[ 0.000000] pcpu-alloc: s0 r0 d32768 u32768 alloc=1*32768
[ 0.000000] pcpu-alloc: [0] 0
[ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 32512
[ 0.000000] Kernel command line: console=ttyS0,57600 rootfstype=squashfs,jffs2
[ 0.000000] PID hash table entries: 512 (order: -1, 2048 bytes)
[ 0.000000] Dentry cache hash table entries: 16384 (order: 4, 65536 bytes)
[ 0.000000] Inode-cache hash table entries: 8192 (order: 3, 32768 bytes)
[ 0.000000] Writing ErrCtl register=00075952
[ 0.000000] Readback ErrCtl register=00075952
[ 0.000000] Memory: 124832K/131072K available (3611K kernel code, 172K rwdata, 840K rodata, 168K init, 207K bss, 6240K 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] CPU Clock: 580MHz
[ 0.000000] clocksource: systick: mask: 0xffff max_cycles: 0xffff, max_idle_ns: 583261500 ns
[ 0.000000] systick: enable autosleep mode
[ 0.000000] systick: running - mult: 214748, shift: 32
[ 0.000000] clocksource: MIPS: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 6590553264 ns
[ 0.000010] sched_clock: 32 bits at 290MHz, resolution 3ns, wraps every 7405115902ns
[ 0.015471] Calibrating delay loop... 385.84 BogoMIPS (lpj=1929216)
[ 0.087711] pid_max: default: 32768 minimum: 301
[ 0.097105] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.110123] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.129658] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[ 0.149139] futex hash table entries: 256 (order: -1, 3072 bytes)
[ 0.161306] pinctrl core: initialized pinctrl subsystem
[ 0.172141] NET: Registered protocol family 16
[ 0.663935] PCI host bridge /pcie@10140000 ranges:
[ 0.673327] MEM 0x0000000020000000..0x000000002fffffff
[ 0.683700] IO 0x0000000010160000..0x000000001016ffff
[ 0.711681] rt2880_gpio 10000600.gpio: registering 24 gpios
[ 0.722715] rt2880_gpio 10000600.gpio: registering 24 irq handlers
[ 0.735746] PCI host bridge to bus 0000:00
[ 0.743743] pci_bus 0000:00: root bus resource [mem 0x20000000-0x2fffffff]
[ 0.757462] pci_bus 0000:00: root bus resource [io 0xffffffff]
[ 0.769187] pci_bus 0000:00: root bus resource [??? 0x00000000 flags 0x0]
[ 0.782687] pci_bus 0000:00: No busn resource found for root bus, will use [bus 00-ff]
[ 0.798474] pci 0000:00:00.0: [1814:0801] type 01 class 0x060400
[ 0.798513] pci 0000:00:00.0: reg 0x10: [mem 0x00000000-0x7fffffff]
[ 0.798527] pci 0000:00:00.0: reg 0x14: [mem 0x00000000-0x0000ffff]
[ 0.798600] pci 0000:00:00.0: supports D1
[ 0.798610] pci 0000:00:00.0: PME# supported from D0 D1 D3hot
[ 0.798868] pci 0000:00:00.0: bridge configuration invalid ([bus 00-00]), reconfiguring
[ 0.814869] pci 0000:01:00.0: [14c3:7650] type 00 class 0x028000
[ 0.814919] pci 0000:01:00.0: reg 0x10: [mem 0x00000000-0x000fffff]
[ 0.815048] pci 0000:01:00.0: PME# supported from D0 D3hot D3cold
[ 0.815290] pci 0000:01:00.1: [14c3:8650] type 00 class 0x0d1100
[ 0.815333] pci 0000:01:00.1: reg 0x10: [mem 0x00000000-0x000fffff]
[ 0.815459] pci 0000:01:00.1: supports D1
[ 0.815469] pci 0000:01:00.1: PME# supported from D0 D1 D3hot D3cold
[ 0.815664] pci_bus 0000:01: busn_res: [bus 01-ff] end is updated to 01
[ 0.815681] pci_bus 0000:00: busn_res: [bus 00-ff] end is updated to 01
[ 0.815730] pci 0000:00:00.0: BAR 0: no space for [mem size 0x80000000]
[ 0.828786] pci 0000:00:00.0: BAR 0: failed to assign [mem size 0x80000000]
[ 0.842593] pci 0000:00:00.0: BAR 8: assigned [mem 0x20000000-0x201fffff]
[ 0.856094] pci 0000:00:00.0: BAR 1: assigned [mem 0x20200000-0x2020ffff]
[ 0.869604] pci 0000:01:00.0: BAR 0: assigned [mem 0x20000000-0x200fffff]
[ 0.883099] pci 0000:01:00.1: BAR 0: assigned [mem 0x20100000-0x201fffff]
[ 0.896596] pci 0000:00:00.0: PCI bridge to [bus 01]
[ 0.906447] pci 0000:00:00.0: bridge window [mem 0x20000000-0x201fffff]
[ 0.923779] clocksource: Switched to clocksource systick
[ 0.935360] NET: Registered protocol family 2
[ 0.944754] TCP established hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.958528] TCP bind hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.971115] TCP: Hash tables configured (established 1024 bind 1024)
[ 0.983938] UDP hash table entries: 256 (order: 0, 4096 bytes)
[ 0.995443] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
[ 1.008121] NET: Registered protocol family 1
[ 1.016752] PCI: CLS 0 bytes, default 32
[ 1.019475] rt-timer 10000100.timer: maximum frequency is 1220Hz
[ 1.032182] Crashlog allocated RAM at address 0x3f00000
[ 1.044285] workingset: timestamp_bits=30 max_order=15 bucket_order=0
[ 1.062264] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[ 1.073768] jffs2: version 2.2 (NAND) (SUMMARY) (LZMA) (RTIME) (CMODE_PRIORITY) (c) 2001-2006 Red Hat, Inc.
[ 1.103241] io scheduler noop registered
[ 1.110947] io scheduler deadline registered (default)
[ 1.122089] gpio-export gpio_export: 3 gpio(s) exported
[ 1.132660] Serial: 8250/16550 driver, 2 ports, IRQ sharing disabled
[ 1.146131] console [ttyS0] disabled
[ 1.153122] 10000500.uart: ttyS0 at MMIO 0x10000500 (irq = 13, base_baud = 2500000) is a Palmchip BK-3103
[ 1.172205] console [ttyS0] enabled
[ 1.185907] bootconsole [early0] disabled
[ 1.202360] 10000c00.uartlite: ttyS1 at MMIO 0x10000c00 (irq = 20, base_baud = 2500000) is a Palmchip BK-3103
[ 1.222703] cacheinfo: Failed to find cpu0 device node
[ 1.232976] cacheinfo: Unable to detect cache hierarchy for CPU 0
[ 1.250682] spi spi0.0: force spi mode3
[ 1.259141] m25p80 spi0.0: mx25l12805d (16384 Kbytes)
[ 1.269311] 4 fixed-partitions partitions found on MTD device spi0.0
[ 1.281970] Creating 4 MTD partitions on "spi0.0":
[ 1.291521] 0x000000000000-0x000000010000 : "jboot"
[ 1.302113] 0x000000010000-0x000000210000 : "recovery"
[ 1.313221] 0x000000210000-0x000000ff0000 : "firmware"
[ 1.326570] 2 jimage-fw partitions found on MTD device firmware
[ 1.338450] 0x000000210000-0x00000038c261 : "kernel"
[ 1.349194] 0x00000038c261-0x000000ff0000 : "rootfs"
[ 1.359907] mtd: device 4 (rootfs) set to be root filesystem
[ 1.372692] 1 squashfs-split partitions found on MTD device rootfs
[ 1.385077] 0x000000600000-0x000000ff0000 : "rootfs_data"
[ 1.396704] 0x000000ff0000-0x000001000000 : "config"
[ 1.408156] libphy: Fixed MDIO Bus: probed
[ 1.425470] gsw: setting port4 to ephy mode
[ 1.433884] mtk_soc_eth 10100000.ethernet: generated random MAC address 66:7d:5b:55:cf:d9
[ 1.450264] mtk_soc_eth 10100000.ethernet: loaded mt7620 driver
[ 1.462721] mtk_soc_eth 10100000.ethernet eth0: mediatek frame engine at 0xb0100000, irq 5
[ 1.479731] rt2880_wdt 10000120.watchdog: Initialized
[ 1.491033] NET: Registered protocol family 10
[ 1.503585] Segment Routing with IPv6
[ 1.511053] NET: Registered protocol family 17
[ 1.519978] 8021q: 802.1Q VLAN Support v1.8
[ 1.534811] VFS: Mounted root (squashfs filesystem) readonly on device 31:4.
[ 1.549823] Freeing unused kernel memory: 168K
[ 1.558701] This architecture does not have kernel memory protection.
[ 2.447472] init: Console is alive
[ 2.454579] init: - watchdog -
[ 2.783774] random: fast init done
[ 3.615593] kmodloader: loading kernel modules from /etc/modules-boot.d/*
[ 3.763072] usbcore: registered new interface driver usbfs
[ 3.774164] usbcore: registered new interface driver hub
[ 3.784888] usbcore: registered new device driver usb
[ 3.800974] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[ 3.815781] ehci-platform: EHCI generic platform driver
[ 3.836579] phy phy-usbphy.0: remote usb device wakeup disabled
[ 3.848378] phy phy-usbphy.0: UTMI 16bit 30MHz
[ 3.857248] ehci-platform 101c0000.ehci: EHCI Host Controller
[ 3.868742] ehci-platform 101c0000.ehci: new USB bus registered, assigned bus number 1
[ 3.884650] ehci-platform 101c0000.ehci: irq 26, io mem 0x101c0000
[ 3.906285] ehci-platform 101c0000.ehci: USB 2.0 started, EHCI 1.00
[ 3.919766] hub 1-0:1.0: USB hub found
[ 3.927697] hub 1-0:1.0: 1 port detected
[ 3.939584] kmodloader: done loading kernel modules from /etc/modules-boot.d/*
[ 3.958142] init: - preinit -
[ 4.609919] usb 1-1: new high-speed USB device number 2 using ehci-platform
[ 4.863514] random: procd: uninitialized urandom read (4 bytes read)
[ 4.876757] hub 1-1:1.0: USB hub found
[ 4.889951] hub 1-1:1.0: 4 ports detected
[ 5.276640] 8021q: adding VLAN 0 to HW filter on device eth0
[ 6.633544] jffs2: notice: (386) jffs2_build_xattr_subsystem: complete building xattr subsystem, 2 of xdatum (0 unchecked, 2 orphan) and 2 of xref (2 dead, 0 orphan) found.
[ 6.666535] mount_root: switching to jffs2 overlay
[ 6.705703] overlayfs: upper fs does not support tmpfile.
[ 6.722555] urandom-seed: Seeding with /etc/urandom.seed
[ 6.845356] procd: - early -
[ 6.852048] procd: - watchdog -
[ 7.269637] procd: - watchdog -
[ 7.276300] procd: - ubus -
[ 7.392472] random: ubusd: uninitialized urandom read (4 bytes read)
[ 7.406963] random: ubusd: uninitialized urandom read (4 bytes read)
[ 7.420285] random: ubusd: uninitialized urandom read (4 bytes read)
[ 7.433977] procd: - init -
[ 7.937281] kmodloader: loading kernel modules from /etc/modules.d/*
[ 7.956607] ip6_tables: (C) 2000-2006 Netfilter Core Team
[ 7.980297] Loading modules backported from Linux version v4.19-rc5-0-g6bf4ca7fbc85
[ 7.995641] Backport generated by backports.git v4.19-rc5-1-0-g05571dcd
[ 8.013209] ip_tables: (C) 2000-2006 Netfilter Core Team
[ 8.033227] nf_conntrack version 0.5.0 (2048 buckets, 8192 max)
[ 8.113236] xt_time: kernel timezone is -0000
[ 8.201432] PPP generic driver version 2.4.2
[ 8.212887] NET: Registered protocol family 24
[ 8.237754] mt76x0e 0000:01:00.0: card - bus=0x1, slot = 0x0 irq=4
[ 8.250331] mt76x0e 0000:01:00.0: ASIC revision: 76100002
[ 8.263440] mt76x0e 0000:01:00.0: Firmware Version: 0.1.00
[ 8.359140] mt76x0e 0000:01:00.0: EEPROM ver:01 fae:00
[ 8.373358] ieee80211 phy0: Selected rate control algorithm 'minstrel_ht'
[ 8.420436] ieee80211 phy1: rt2x00lib_request_eeprom_file: Info - Loading EEPROM data from 'soc_wmac.eeprom'.
[ 8.510539] ieee80211 phy1: rt2x00_set_rt: Info - RT chipset 6352, rev 0500 detected
[ 8.526063] ieee80211 phy1: rt2x00_set_rf: Info - RF chipset 7620 detected
[ 8.540465] ieee80211 phy1: Selected rate control algorithm 'minstrel_ht'
[ 8.546221] kmodloader: done loading kernel modules from /etc/modules.d/*
[ 9.753034] urandom_read: 5 callbacks suppressed
[ 9.753044] random: jshn: uninitialized urandom read (4 bytes read)
[ 18.211186] 8021q: adding VLAN 0 to HW filter on device eth0
[ 18.260918] device eth0 entered promiscuous mode
[ 18.303450] br-lan: port 1(eth0.1) entered blocking state
[ 18.314288] br-lan: port 1(eth0.1) entered disabled state
[ 18.325561] device eth0.1 entered promiscuous mode
[ 18.430200] br-lan: port 1(eth0.1) entered blocking state
[ 18.441028] br-lan: port 1(eth0.1) entered forwarding state
[ 18.452344] IPv6: ADDRCONF(NETDEV_UP): br-lan: link is not ready
[ 19.263824] IPv6: ADDRCONF(NETDEV_CHANGE): br-lan: link becomes ready
[ 37.279832] mtk_soc_eth 10100000.ethernet eth0: port 0 link up (100Mbps/Full duplex)
[ 54.399779] random: crng init done
[ 56.395857] mtk_soc_eth 10100000.ethernet eth0: port 0 link down
[ 56.409874] br-lan: port 1(eth0.1) entered disabled state
[ 57.157870] mtk_soc_eth 10100000.ethernet eth0: port 0 link up (100Mbps/Full duplex)
[ 57.174706] br-lan: port 1(eth0.1) entered blocking state
[ 57.185536] br-lan: port 1(eth0.1) entered forwarding state
root@OpenWrt:~#
So I guess the only remaining issue now would be telling MSP430 to shutdown the device without detaching battery. I will check whether I can fix my UART traces and try to capture the transmission again 