Linksys EA6350 v4

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This is a dual band 802.11ac AC1200 gigabit wireless router. There are two non-detachable antennas and a USB3 port.

Linksys EA6350 v4

Installation Issues - Feb 2022

Warning: If both partitions are overwritten with non-Linksys firmwares, there is no safe method of reverting back to Linksys OEM firmware at time of writing.

SoCCPU MHzFlash MBRAM MBWLAN HardwareWLAN2.4WLAN5.0Gbit portsUSB
MediaTek MT7621DAT880128NAND128MediaTek MT7603EN, MediaTek MT7613AENb/g/na/n/ac51x 3.0

This device has a dual partition layout (A/B). One partition is set as active and boots. If boot fails three times, than the “other” partition is set as active and booted, assuming it is still safe. A bootcounter (stored in the partiton S_ENV) is used for this purpose. The bootcounter has a flaw that prevents direct install of OpenWrt. Use this procedure to bypass:

  1. Use the Linksys GUI to flash the Linksys OEM firmware. The device will now boot Linksys GUI from partition B.
  2. Flash OpenWrt squashfs-factory image with Linksys GUI, it will be installed on partition A and will boot.

You will be able to boot OpenWrt three times from partition A, until the bootcounter flaw set back partition B as bootable (with Linksys GUI). To prevent this, add this code to etc/rc.local

/rom/sbin/mtd unlock s_env
/rom/sbin/mtd erase s_env
exit 0

This code erases the S_ENV partition that contains the bootcounter. Information from this forum thread https://forum.openwrt.org/t/can-not-install-openwrt-on-linksys-ea7300-v2/85421/11

The advice for other Linksys dual partition routers, is to revert to booting Linksys stock firmware from the other partition (A).

Then install the new OpenWrt squashfs-factory image using Linksys GUI, as described earlier in this wiki page.

FIXME If you were to use OpenWrt to install the new squashfs-sysupgrade, there is a risk of overwriting the Linksys stock firmware on the other partition with other Linksys routers such as the earlier EA6350 v3 and EA8300. It is not known at this time whether this behaviour applies to the EA6350 v4.

The EA6350 v4 is a typical dual partition device. The Linksys firmware is copied to both partitions at the factory. At the time of writing, it is recommended to never overwrite both partitions with non-Linksys firmware images, if you wish to keep the option to return to using Linksys firmware in the future.

Hard-reset the router three times to force it to boot from 'B.' This is where the stock firmware resides. To remove any traces of OpenWrt from your router simply flash the OEM image at this point.

After flashing, proceed with Basic configuration: Set up your Internet connection, configure wireless, configure USB port, etc.

FIXME Please fill in real values for this device, then remove the EXAMPLEs and the WRAP that encloses this text.

The default network configuration is:

Interface Name Description Default configuration
br-lan EXAMPLE LAN & WiFi EXAMPLE 192.168.1.1/24
vlan0 (eth0.0) EXAMPLE LAN ports (1 to 4) EXAMPLE None
vlan1 (eth0.1) EXAMPLE WAN port EXAMPLE DHCP
wl0 EXAMPLE WiFi EXAMPLE Disabled

FIXME Please fill in real values for this device, then remove the EXAMPLEs

Numbers 0-3 are Ports 1-4 as labeled on the unit, number 4 is the Internet (WAN) on the unit, 5 is the internal connection to the router itself. Don't be fooled: Port 1 on the unit is number 3 when configuring VLANs. vlan0 = eth0.0, vlan1 = eth0.1 and so on.

Port Switch port
Internet (WAN) EXAMPLE 4
LAN 1 EXAMPLE 3
LAN 2 EXAMPLE 2
LAN 3 EXAMPLE 1
LAN 4 EXAMPLE 0

hardware.button on howto use and configure the hardware button(s). Here, we merely name the buttons, so we can use them in the above Howto.

FIXME Please fill in real values for this device, then remove the EXAMPLEs and the WRAP that encloses this text.

The Linksys EA6350 has the following buttons:

BUTTON Event
EXAMPLE Reset reset
EXAMPLE Secure Easy Setup ses
EXAMPLE No buttons at all. -
General
Brand Linksys
Model EA6350
Versions v4
Device Type WiFi Router
Availability Available 2022
Comments - general
OpenWrt Support
Supported Since Commit https://git.openwrt.org/?p=openwrt/openwrt.git;a=commit;h=e0a574d4b73b6444d493866128cf3be3fae10892
Supported Since Release
Supported Current Release snapshot
Unsupported
Hardware
Bootloader U-Boot
Target ramips
System-On-Chip MediaTek MT7621DAT
CPU MHz 880
Flash MB 128NAND
RAM MB 128
Network
Ethernet 100M ports -
Ethernet Gbit ports 5
Switch MediaTek MT7621DAT
Modem -
VLAN Yes
Comments - network ports
Wireless
WLAN 2.4GHz b/g/n
WLAN 5.0GHz a/n/ac
WLAN Hardware MediaTek MT7603EN, MediaTek MT7613AEN
Detachable Antennas -
Comments - WLAN
Interfaces
USB ports 1x 3.0
SATA ports -
Serial ¿
JTAG ¿
Comments - USB & SATA ports
Misc
LED count ¿
Button count ¿
Power supply 12 VDC, 1.5 A
Links
Forum Topic URL
WikiDevi URL https://wikidevi.wi-cat.ru/Linksys_EA6350_v4
OEM device homepage URL https://www.linksys.com/us/wireless-routers/traditional-routers/linksys-ea6350-4b-ac1200-dual-band-wifi-5-router/p/p-ea6350v4/
Firmware OEM Stock URL https://www.linksys.com/us/support-article?articleNum=148481
Firmware OpenWrt Install URL
Firmware OpenWrt Upgrade URL
Edit the underlying data View/Edit data

Insert photo of front of the casing

Insert photo of back of the casing

Insert photo of backside label

Insert photo of PCB

FIXME Describe what needs to be done to open the device, e.g. remove rubber feet, adhesive labels, screws, …

port.serial general information about the serial port, serial port cable, etc.

How to connect to the Serial Port of this specific device:
Insert photo of PCB with markings for serial port

FIXME Replace EXAMPLE by real values.

Serial connection parameters
for Linksys EA6350 v4
EXAMPLE 115200, 8N1

port.jtag general information about the JTAG port, JTAG cable, etc.

How to connect to the JTAG Port of this specific device:
Insert photo of PCB with markings for JTAG port

COPY HERE THE BOOTLOG WITH THE ORIGINAL FIRMWARE


COPY HERE THE BOOTLOG ONCE OPENWRT IS INSTALLED AND RUNNING


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  • Last modified: 2022/02/08 23:36
  • by bill888