Linksys MX8500

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abgn+ac+ax (AXE8400)
Tri-Band AXE8400 Mesh WiFi 6E System
Support Support page
Wikipedia Linksys routers
3rd Party Firmware
dd-wrt Status Unknown
OpenWrt Supported
Tomato any flavor Incompatible
Gargoyle Status Unknown
Platform
BrandModelRev Linksys MX8500 v1.0
FCC ID (fcc.io) K7S-03685
FCC ID (fcc.report) K7S-03685
Type wireless router
CPU1 checkY Qualcomm IPQ8072A
CPU1 Type ARM Cortex-A53
CPU1 Speed 2.2 GHz ( 4 cores ) 64-bit
Flash1 Chip Fidelix FMND4G08S3J-ID
Flash1 Size 512 MiB 536,870,912 B <br />4,194,304 Kib <br />524,288 KiB <br />4,096 Mib <br />0.5 GiB <br /> (SPI NAND)
RAM1 Size 1 GiB 1,024 MiB <br />1,073,741,824 B <br />8,388,608 Kib <br />1,048,576 KiB <br />8,192 Mib <br /> (DDR3L)
RAM1 Chip Kingston D2516ECMDXGJD
ETH chip1 Qualcomm IPQ8072A
Switch Qualcomm Atheros QCA8075
Ethernet Port Count 1-5GbE-WAN
4-1GbE-LAN
Wired Standard IEEE 802.3i/3u/3ab/3bz

802dot11 OUI: none specified

Stock bootloader U-Boot
Expansion IF types USB 3.0
USB ports 1
USB Hub Compatible Untested
Power 12 VDC, 4 A
Connector type barrel
Serial Port (UART) yes, (115200 8N1)

Flags:
Wi-Fi 6E, Bluetooth 5.0

Other
3rd Party Firmware Support OpenWrt • (List | Dev | DLs)
Retail
Availability End of Life
Radio 1
Chip1 Qualcomm QCN5024
Wireless interface OUI none specified
Antenna Connector Type none specified
MIMO status 4x4:4
Wireless Standard IEEE 802.11b/g/n/ax
802.11ax up to 1148 Mbps
802.11n up to 600 Mbps
802.11g up to 54 Mbps
802.11b up to 11 Mbps
WiFi Operating Frequency 2.4 GHz
Radio 2
Chip1 Qualcomm QCN5054
Wireless interface OUI none specified
Antenna Connector Type none specified
MIMO status 4x4:4
Wireless Standard IEEE 802.11a/n/ac/ax
802.11ax up to 2402 Mbps
802.11ac up to 1733 Mbps
802.11n up to 600 Mbps
802.11a up to 54 Mbps
WiFi Operating Frequency 5 GHz
Radio 3
Chip1 Qualcomm QCN9024
Wireless interface OUI none specified
Antenna Connector Type none specified
MIMO status 4x4:4
Wireless Standard IEEE 802.11a/n/ac/ax
AX-QAM up to 4804 Mbps
802.11ax up to 2402 Mbps
802.11ac up to 1733 Mbps
802.11n up to 600 Mbps
802.11a up to 54 Mbps
WiFi Operating Frequency 6 GHz

For a list of all currently documented Qualcomm chipsets with specifications, see Qualcomm.
For a list of all currently documented Qualcomm Atheros (QCA) chipsets with specifications, see Qualcomm Atheros.

For a list of all currently documented Linksys devices with specifications, see Linksys.

1148 Mbps - 4SS 2.4GHz 802.11ax (40MHz chan., 256-QAM),
2402 Mbps - 4SS 5.2GHz 802.11ax (80MHz chan., 1024-QAM),
4804 Mbps - 4SS 5.8/6GHz 802.11ax (160MHz chan., 1024-QAM) = AXE8400 class

Overview

IoT: Bluetooth 5, Zigbee and Thread (NXP K32W041)

Links of Interest

Flashing

Flashing OpenWrt

Target: qualcommax
Subtarget: ipq807x
Package architecture: aarch64_cortex-a53
Supported Since Commit
Support started version: 24.10.0
Current supported version: 24.10.5
LAN Hardware: Qualcomm Atheros QCA8075
LAN Comment: Marvell AQR114C 5Gbe Phy
WLAN Hardware: Qualcomm QCN5024, Qualcomm QCN5054, Qualcomm QCN9024
Installation method(s):
GUI OEM, see devicepage, see git-commit
Recovery method(s):
USB, see git-commit
git • >>
qualcommax: ipq807x: add support for Linksys MX8500
Hardware specification:
========
SoC: Qualcomm IPQ8072A
Flash: 512MB (Fidelix FMND4G08S3J-ID)
RAM: 1GB (2x Kingston DDR3L D2516ECMDXGJD)
Ethernet: 1x 10/100/1000/2500/5000Mbps (Marvell AQR114C)
Ethernet: 4x 10/100/1000Mbps (Qualcomm QCA8075)
WiFi1: 6GHz ax 4x4 (Qualcomm QCN9024 + Skyworks SKY85784-11) - channels 33-229
WiFi2: 5GHz ax 4x4 (Qualcomm QCN5054 + Skyworks SKY85755-11) - channels 36-177
WiFi3: 2.4GHz ax 4x4 (Qualcomm QCN5024 + Skyworks SKY8340-11)
IoT: Bluetooth 5, Zigbee and Thread (NXP K32W041)
LED: 1x RGB status (NXP PCA9633)
USB: 1x USB 3.0
Button: WPS, Reset

Flash instructions:
========
1. Manually upgrade firmware using openwrt-qualcommax-ipq807x-linksys_mx8500-squashfs-factory.bin image.
More details can be found here: https://www.linksys.com/support-article?articleNum=47547
After first boot check actual partition:
- fw_printenv -n boot_part
and install firmware on second partition using command in case of 2:
- mtd -r -e kernel -n write openwrt-qualcommax-ipq807x-linksys_mx8500-squashfs-factory.bin kernel
and in case of 1:
- mtd -r -e alt_kernel -n write openwrt-qualcommax-ipq807x-linksys_mx8500-squashfs-factory.bin alt_kernel

2. Installation using serial connection from OEM firmware (default login: root, password: admin):
- fw_printenv -n boot_part
In case of 2:
- flash_erase /dev/mtd21 0 0
- nandwrite -p /dev/mtd21 openwrt-qualcommax-ipq807x-linksys_mx8500-squashfs-factory.bin
or in case of 1:
- flash_erase /dev/mtd23 0 0
- nandwrite -p /dev/mtd23 openwrt-qualcommax-ipq807x-linksys_mx8500-squashfs-factory.bin
After first boot install firmware on second partition:
- mtd -r -e kernel -n write openwrt-qualcommax-ipq807x-linksys_mx8500-squashfs-factory.bin kernel
or:
- mtd -r -e alt_kernel -n write openwrt-qualcommax-ipq807x-linksys_mx8500-squashfs-factory.bin alt_kernel

3. Installation from initramfs image using USB drive:
Put the initramfs image on the USB drive:
- dd bs=1M if=openwrt-qualcommax-ipq807x-linksys_mx8500-initramfs-uImage.itb of=/dev/sda
Stop u-boot and run:
- usb start && usbboot $loadaddr 0 && bootm $loadaddr
Write firmware to the flash from initramfs:
- mtd -e kernel -n write openwrt-qualcommax-ipq807x-linksys_mx8500-squashfs-factory.bin kernel
and:
- mtd -r -e alt_kernel -n write openwrt-qualcommax-ipq807x-linksys_mx8500-squashfs-factory.bin alt_kernel

4. Back to the OEM firmware:
- mtd -e kernel -n write FW_MX8500_1.0.11.208937_prod.img kernel
and:
- mtd -r -e alt_kernel -n write FW_MX8500_1.0.11.208937_prod.img alt_kernel

5. USB recovery:
Put the initramfs image on the USB:
- dd bs=1M if=openwrt-qualcommax-ipq807x-linksys_mx8500-initramfs-uImage.itb of=/dev/sda
Set u-boot env:
- fw_setenv bootusb 'usb start && usbboot $loadaddr 0 && bootm $loadaddr'
- fw_setenv bootcmd 'run bootusb; if test $auto_recovery = no; then bootipq; elif test $boot_part = 1; then run bootpart1; else run bootpart2; fi'

AQR firmware:
========
1. Firmware loading:
To properly load the firmware and initialize AQR PHY, we must use the u-boot aq_load_fw function.
To do this, you need to modify u-boot env:
With USB recovery:
- fw_setenv bootcmd 'aq_load_fw; run bootusb; if test $auto_recovery = no; then bootipq; elif test $boot_part = 1; then run bootpart1; else run bootpart2; fi'
and without:
- fw_setenv bootcmd 'aq_load_fw; if test $auto_recovery = no; then bootipq; elif test $boot_part = 1; then run bootpart1; else run bootpart2; fi'

2. Firmware updating:
Newer firmware (AQR-G4_v5.6.5-AQR_WNC_SAQA-L2_GT_ID45287_VER24005.cld) is available in the latest OEM firmware.
To load this firmware via u-boot, we need to add the MBN header and update 0:ethphyfw partition.
For MBN header we can use script from this repository: https://github.com/testuser7/aqr_mbn_tool
- python aqr_mbn_tool.py AQR-G4_v5.6.5-AQR_WNC_SAQA-L2_GT_ID45287_VER24005.cld
To update partition we need to install kmod-mtd-rw package first:
- insmod mtd-rw.ko i_want_a_brick=1
- mtd -e /dev/mtd26 -n write aqr_fw.mbn /dev/mtd26