User Tools

Site Tools


toh:jcg:jhr-n825r

JCG JHR-N825R

Under Construction!
This page is currently under construction. You can edit the article to help completing it.

Write a short, relevant description of the device. Include a technical overview, but avoid marketing buzzwords/useless stuff. Two to four sentences is about right. A picture is good, too. Edit the page to see how to add pictures.

FIXME Any text with a light background (like this one) provides instructions for creating the Details Page. When you have filled in correct/useful information (instead of any template that's there) remove the instructions, as well as the <WRAP> that encloses it.

Generic Router

FIXME

Getting started with a new Device Page

  1. This is an empty template that suggests the information that should be present on a well-constructed Device Page. This means, that you have to fill it with life and information.
  2. There are several "fixme" tags with text on a light background (like this text) throughout this template. As you fill in the page, remove those tags so that people can judge its completeness.
  3. When there are no more "fixme" tags left, delete this one too, along with the <WRAP> that encloses it.

Keep the articles modular

  • Please include only model specific information, omit bla,bla and put everything generic into separate articles
  • If you have no time to write certain stuff, link to generic.overview
  • basic.config should lead the way, do not explain this again
  • DO NOT provide a complete howto here! Instead groom the general HowTos.

Supported Versions

Experimental Versions

None at this time.

Hardware Highlights

ModelVersionSoCCPU MHzFlash MBRAM MBWLAN HardwareWLAN2.4WLAN5.0100M portsGbit portsModemUSB
JHR-N825RRalink RT3052F384432Ralink RT3052F (integrated)b/g/n-5-No-

Installation

Flash Layout

FIXME Find out flash layout, then add the flash layout table here (copy, paste, modify the example).

Please check out the article Flash layout. It contains examples and explanations that describe how to document the flash layout.

OEM easy installation

FIXME The instructions below are for Broadcom devices and only serve as an example. Remove / modify them if they do not apply to this particular device!

This section deals with

  • How you install OpenWrt from a device freshly opened
  • The steps required such as reset to factory defaults if the device has already been configured

Note: Reset router to factory defaults if it has been previously configured.

OEM installation using the TFTP method

Specific values needed for tftp

FIXME Enter values for "FILL-IN" below

Bootloader tftp server IPv4 address FILL-IN
Bootloader MAC address (special) FILL-IN
Firmware tftp image Latest OpenWrt release (NOTE: Name must contain "tftp")
TFTP transfer window FILL-IN seconds
TFTP window start approximately FILL-IN seconds after power on
TFTP client required IP address FILL-IN

Upgrading OpenWrt

generic.sysupgrade

FIXME These are generic instructions. Update with your router's specifics.

LuCI Web Upgrade Process

Terminal Upgrade Process

If you don't have a GUI (LuCI) available, you can alternatively upgrade via the command line. There are two command line methods for upgrading:

  • sysupgrade
  • mtd

Note: It is important that you put the firmware image into the ramdisk (/tmp) before you start flashing.

sysupgrade

  • Login as root via SSH on 192.168.1.1, then enter the following commands:

cd /tmp
wget http://downloads.openwrt.org/snapshots/trunk/XXX/xxx.abc
sysupgrade /tmp/xxx.abc

mtd

If sysupgrade does not support this router, use mtd.

  • Login as root via SSH on 192.168.1.1, then enter the following commands:

cd /tmp
wget http://downloads.openwrt.org/snapshots/trunk/XXX/xxx.abc
mtd write /tmp/xxx.abc linux && reboot

Debricking

Failsafe mode

Basic configuration

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

Specific Configuration

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

Network interfaces

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

Switch Ports (for VLANs)

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

Buttons

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

The JCG JHR-N825R has the following buttons:

BUTTON Event
EXAMPLE Reset reset
EXAMPLE Secure Easy Setup ses
EXAMPLE No buttons at all. -

Hardware

Info

General
Brand JCG
Model JHR-N825R
Versions
Device Type WiFi Router
Availability Available 2016
Comments - general
OpenWrt Support
Supported Since Revision https://dev.openwrt.org/changeset/48906
Supported Since Release
Supported Current Release DD trunk
Unsupported
Hardware
Instruction set MIPS32
Sub Instruction Set MIPS32 24K/E series
Bootloader U-Boot
Target ramips
System-On-Chip Ralink RT3052F
CPU MHz 384
Flash MB 4
RAM MB 32
Network
Ethernet 100M ports 5
Ethernet Gbit ports -
Switch Ralink RT3052F (integrated)
Modem No
VLAN Yes
Comments - network ports
Wireless
WLAN 2.4GHz b/g/n
WLAN 5.0GHz -
WLAN Hardware
Detachable Antennas -
Comments - WLAN
Interfaces
USB ports -
SATA ports -
Serial Yes
JTAG Yes
Comments - USB & SATA ports
Misc
LED count 2
Button count 1
Power supply 12 VDC, 1.0 A
Links
Forum Topic URL
WikiDevi URL https://wikidevi.com/wiki/JCG_JHR-N825R
OEM device homepage URL
Firmware OEM Stock URL
Firmware OpenWrt Install URL https://downloads.openwrt.org/snapshots/trunk/ramips/openwrt-ramips-rt305x-jhr-n825r-squashfs-factory.bin
Firmware OpenWrt Upgrade URL https://downloads.openwrt.org/snapshots/trunk/ramips/openwrt-ramips-rt305x-jhr-n825r-squashfs-sysupgrade.bin
Edit the underlying data View/Edit data

Photos

Front:
Insert photo of front of the casing

Back:
Insert photo of back of the casing

Backside label:
Insert photo of backside label

Opening the case

Note: This will void your warranty!

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

  • To remove the cover and open the device, do a/b/c

Main PCB:
Insert photo of PCB

Serial

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 JCG JHR-N825R
EXAMPLE 115200, 8N1

JTAG

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

Bootloader mods

Hardware mods

None so far.

Bootlogs

OEM bootlog

COPY HERE THE BOOTLOG WITH THE ORIGINAL FIRMWARE


OpenWrt bootlog

COPY HERE THE BOOTLOG ONCE OPENWRT IS INSTALLED AND RUNNING


Notes

Space for additional notes, links to forum threads or other resources.

Tags

toh/jcg/jhr-n825r.txt · Last modified: 2016/03/11 16:30 by tmomas