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> TP-Link TL-WR840N - Discussion | [wifirouter] Discussion
ivan2280
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TP-Link TL-WR840N - Discussion



A photo:
TL-WR840N V1
Attached Image
TL-WR840N V2
Attached ImageAttached Image

Description:
We need to start with the fact that TP-LINK TL-WR840N is exclusively a router for a small home or office. If you need to organize the distribution of the Internet via Wi-Fi and cable, say, more than 10 devices, and constantly download something, play online games, and perform other complex tasks, then you need a more powerful router. For example, as an option, you can watch TP-LINK Archer C20i, which also supports Wi-Fi 5 GHz.

This router without problems will distribute the Internet to several devices via Wi-Fi, and via a network cable. Judging by the information on the box, it can withstand online games, file downloads, etc. But you need to understand that everything is in moderation. If you run some heavy games on several computers at the same time, then most likely it will not withstand this load. If such budget models could cope with all the tasks, then who would buy a router that costs ten or more times more.

Specifications:
v.1
Wireless standard - 802.11n, 2.4 GHz frequency
MIMO support - is
Max. 300 Mbps wireless speed
Reception / Transmission
Information Security - WEP, WPA, WPA2
Transmitter power - 20 dBM
Access Point / Bridge Options

Switch - 4xLAN
Port speed - 100 Mbps
WDS technology support - is
Bridge mode - is

Router

Firewall (FireWall) - is
NAT - there is
SPI - is
DHCP server is
Dynamic DNS support - there is
DMZ - have
Static routing - is

VPN

VPN pass through support - is
PPTP support
Support - L2TP is
Support - IPSec

Antenna

The number of internal antennas - 2

Monitoring and Configuring

Web interface is

Additionally

Dimensions (WxHxD) 182x35x128 mm

v.2
HARDWARE CHARACTERISTICS
Interface 4 LAN ports 10/100 Mbps
1 10/100 Mbps WAN port
Buttons WPS / Reset Button
Antenna 2 fixed 5 dBi antennas
(only for hardware version 2)
External power supply 9 VDC current / 0.6 A
Standards of wireless data transmission IEEE 802.11b, IEEE 802.11g, IEEE 802.11n
Dimensions (WxLxH) 182 x 128 x 35 mm
PARAMETERS OF WIRELESS MODULE
Frequency range (receive and transmit) 2400-2483.5 MHz
11n transfer speed: up to 300 Mbps (dynamic)
11g: up to 54 Mbps (dynamic)
11b: up to 11 Mbps (dynamic)
Sensitivity (reception) 270 Mbps: -68 dBm with 10% PER
130 Mbps: -68 dBm with 10% PER
108 Mbps: -68 dBm with 10% PER
54 Mbps: -68 dBm with 10% PER
11 Mbps: -85 dBm with 8% PER
6 Mbps: -88 dBm with 10% PER
1 Mbps: -90 dBm with 8% PER
EIRP (Wireless Power)<20 dBm or<100 mW
Wireless Features Enable / Disable Wireless Broadcast, WDS Bridge, WMM, Wireless Statistics
Wireless Security 64/128/152-bit WEP / WPA / WPA2, WPA-PSK / WPA2-PSK

Useful links:
Firmware

Discussion of other topics besides the key is not prohibited, but not welcome.
Attention!!! I don’t need to ask me questions about the firmware / router / why it stopped working, etc.
For filling / editing caps writehere.
If I do not answer within 24 hours, then write totelegram.


Post has been editedivan2280 - 08.11.18, 01:19
Reason for editing: slightly edited cap
hawkman
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20.12.16, 23:19
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for v2 Soc - QCA9533
hawkman
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20.12.16, 23:37
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D_Devil @ 08.12.16, 13:59*
Has someone already come across to reflash attached to Kyivstar?

Yes. I reflash. A programmer is not required, but you cannot do without the console and replacing the boot first, and then the firmware from the tp-link, without checking the firmware identifier. Everything about everything took 30 minutes.
On the board we find J3 place for the console connector. 1 (square hole) Tx router, 2 - Rx router, 3 - GND
putti. speed 115200 8n1
we readthis thread
swingfrom here
from the folder china_uboot_ (best) u-boot-qca953x.bin
next turn on the router. we get through the console to boot and strictly enforce this command sequence (of course, the computer and the router must be connected to the Ethernet cable and the tftp server must be raised on the computer.)

tftpboot 0x81000000 u-boot-qca953x.bin
erase 0x9f000000 + 0x20000
cp.b 0x81000000 0x9f000000 0x20000
bootm 0x9f000000

Reboot. In theory, the boot has changed. Check is very simple. Turning off the power, holding down the reset button, powering up and looking at the console message that you can connect to the router at 192.168.1.1 and through the web interface there is not a lot of mess around in the buta.
Download from the site TP-link firmware. In the settings of the boot, we change the MAC and PIN to Wi-Fi. choose upgrade firmware. fill in the firmware merged from the tplink site. wait a couple of minutes. the router will do everything by itself. You can complete the process through the console.
You can use. One nuance. after replacing the boot, the power indicator turns off. It can be fixed simply. go to the web interface of the router and in the firmware replacement section re-pour the firmware from the Tlink website. In this case, the boot is worn on the motherboard from the tplinka. The power indicator will start to work. Actually everything ...;)

Post has been editedhawkman - 20.12.16, 23:40
SunCh0
Message#24
23.12.16, 21:30
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colleague, question on TL-WR840N V2
It is different from the filling TL-WR840N V1x and closest to the TL-WR841N V9
generally considered unsupported in openvrt
but since it is very similar - I assembled the firmware on 15.15.01 to make an access point out of it
Yes, I ordered access points with detachable antennas, and 6 of these
Everything works great, except for the internal switch to 4 ports
The system shows 2 interfaces - 1 van and 1 lan, behind which this switch is
All devices inside the switch work and can communicate with the outside world, but not with each other
Can anyone come across this trouble?
firewall is off, modules are unloaded
this is loaded
arc4 1312 2
ath 19877 3 ath9k
ath9k 86886 0
ath9k_common 16846 1 ath9k
ath9k_hw 337416 2 ath9k
cfg80211 213985 4 ath9k
compat 1332 4 ath9k
crypto_blkcipher 10487 1 arc4
gpio_button_hotplug 4464 0
mac80211 379971 1 ath9k

In DMSA about the interfaces you can see the following
[1.420000] eth0: Atheros AG71xx at 0xba000000, irq 5, mode: GMII
[2.030000] eth1: Atheros AG71xx at 0xb9000000, irq 4, mode: MII
[6.160000] eth0: link up (1000Mbps / Full duplex)
[7.810000] eth0: link down
[16.370000] device eth0 entered promiscuous mode
[16.400000] device eth1 entered promiscuous mode
[16.410000] br-lan: port 2 (eth1) entered forwarding state
[16.410000] br-lan: port 2 (eth1) entered forwarding state
[17.330000] br-lan: port 2 (eth1) entered disabled state
[18.010000] eth0: link up (1000Mbps / Full duplex)
[18.010000] br-lan: port 1 (eth0) entered forwarding state
[18.020000] br-lan: port 1 (eth0) entered forwarding state
[18.590000] eth1: link up (100Mbps / Full duplex)
[18.590000] br-lan: port 2 (eth1) entered forwarding state
[18.600000] br-lan: port 2 (eth1) entered forwarding state
[20.020000] br-lan: port 1 (eth0) entered forwarding state
[20.600000] br-lan: port 2 (eth1) entered forwarding state


ps: I will duplicate in a theme about 841
SunCh0
Message#25
23.12.16, 23:26
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and dogonku
newconconfig dev eth0 show
Global attributes:
enable_vlan: 0
Port 0:
pvid: 0
link: port: 0 link: up speed: 1000baseT full-duplex txflow rxflow
Port 1:
pvid: 0
link: port: 1 link: up speed: 100baseT full-duplex auto
Port 2:
pvid: 0
link: port: 2 link: down
Port 3:
pvid: 0
link: port: 3 link: down
Port 4:
pvid: 0
link: port: 4 link: up speed: 100baseT full-duplex auto
VLAN 0:
vid: 0
ports: 0 1 2 3 4


network settings

config interface 'loopback'
option ifname 'lo'
option proto 'static'
option ipaddr '127.0.0.1'
option netmask '255.0.0.0'
config interface 'lan'
option ifname 'eth0 eth1'
option force_link '1'
option type 'bridge'
option proto 'static'
option ipaddr '192.168.0.254'
option netmask '255.255.255.0'
option gateway '192.168.0.1'
option dns '192.168.0.1 192.168.0.2'
option dns_search 'ololo.ru'


and about the piece of iron itself

system type: Qualcomm Atheros QCA9533 ver 2 rev 0
machine: TP-LINK TL-WR840N v2
processor: 0
cpu model: MIPS 24Kc V7.4
BogoMIPS: 432.53
wait instruction: yes
microsecond timers: yes
tlb_entries: 16
extra interrupt vector: yes
hardware watchpoint: yes, count: 4, address / irw mask: [0x0ffc, 0x0ffc, 0x0ffb, 0x0ffb]
isa: mips1 mips2 mips32r1 mips32r2
ASEs implemented: mips16
shadow register sets: 1
kscratch registers: 0
package: 0
core: 0
VCED exceptions: not available
VCEI exceptions: not available
SunCh0
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24.12.16, 23:02
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Colleagues, so, in the topic about 841 helped, I finished the firmware for wr840n v2

however, the open-wiki device is listed as not supported
I sawed the firmware for myself, I needed to make an access point with little possibilities
some packets are thrown out, sticks configs, etc., etc.

how is it taken here? to put the patch on 15.15.01 or firmware entirely?
on openvrt commit no sense, because I did not add the config, but replaced the config 841v9
Yes, it is not very beautiful, but I had to collect in a quick way

ps: if anyone ever needs my crafts, I will be available until mid-March, and then from mid-March to mid-May I will be without a network and will not be able to lay out anything: blush:

Post has been editedSunCh0 - 24.12.16, 23:12
Nimnul1979
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05.01.17, 20:44
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Hawkman @ 20.12.16, 22:37*
from the folder china_uboot_ (best) u-boot-qca953x.bin

Be so kind as to put this file, because I can not download.
Thank.
idheady
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06.01.17, 19:15
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I bought a TL-WR840n rotor with 2 antennas. The problem is that there is a very large packet loss. I thought the problem was in the router, I was 3 times in the store for the same model, but the problem remained. When connected directly to the PC, everything is fine. I changed the firmware, changed the mtu value, did not help, the cable is fine. The problem is both through the cable and through Wi-Fi. What to do?

Post has been editedidheady - 06.01.17, 19:15
Alex_Tsarik
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D_Devil @ 08.12.16, 14:59*
Good day. Now Kyivstar gives such routers to the Internet. Has someone already come across to reflash attached to Kyivstar?

Router second revision, with antennas?
The other day I will receive a patient - I will study the issue.
D_Devil
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Hawkman @ 20.12.16, 22:37*
Yes. I reflash. A programmer is not required, but you cannot do without the console and replacing the boot first, and then the firmware from the tp-link, without checking the firmware identifier. Everything about everything took 30 minutes.
On the board we find J3 place for the console connector. 1 (square hole) Tx router, 2 - Rx router, 3 - GND
putti. speed 115200 8n1
read this thread
swing from here
from the folder china_uboot_ (best) u-boot-qca953x.bin
next turn on the router. we get through the console to boot and strictly enforce this command sequence (of course, the computer and the router must be connected to the Ethernet cable and the tftp server must be raised on the computer.)

tftpboot 0x81000000 u-boot-qca953x.bin
erase 0x9f000000 + 0x20000
cp.b 0x81000000 0x9f000000 0x20000
bootm 0x9f000000

Reboot. In theory, the boot has changed. Check is very simple. Turning off the power, holding down the reset button, powering up and looking at the console message that you can connect to the router at 192.168.1.1 and through the web interface there is not a lot of mess around in the buta.
Download from the site TP-link firmware. In the settings of the boot, we change the MAC and PIN to Wi-Fi. choose upgrade firmware. fill in the firmware merged from the tplink site. wait a couple of minutes. the router will do everything by itself. You can complete the process through the console.
You can use. One nuance. after replacing the boot, the power indicator turns off. It can be fixed simply. go to the web interface of the router and in the firmware replacement section re-pour the firmware from the Tlink website. In this case, the boot is worn on the motherboard from the tplinka. The power indicator will start to work. Actually everything ...

Post has been editedHawkman - 20.12.16, 22:40


I set up smart TVs and the irony is that this router blocks dns, which I enter) and, unfortunately, I’m not really friends with a soldering iron, and it’s not an option to flash all routers ..

Posted 10/01/2017 03:23:

Alex_Tsarik @ 07.01.17, 18:16*
Router second revision, with antennas?
The other day I will receive a patient - I will study the issue.

Yes.
I will be grateful for the instruction, if you succeed

Post has been editedD_Devil - 10.01.17, 03:25


--------------------
ICE DS v.7.0, Android ICS 4.0.4,

4extrecovery, Sense 3.6, Transcend 32Gb 10Class download

hawkman
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10.01.17, 22:20
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What to study then ?. louten bottle If you correct the native Tplinkovskiy firmware under the identifier that will be recognized by the Kievstar boot, then everything can be changed through the recovery mode. Booth in the router already with the function of recovering. clamp reset. turn on the router. Hold 5-10 seconds pressed reset, release. on a computer raised TFTP server. IP address on the computer 192.168.0.86 (required!). Boot tftp server waiting from this address. The file name must be (required !!!) wr840nv2_tp_recovery.bin In the server logs it will be seen whether the router took the firmware or not. further wait 2-4min. The router is overloaded. Firmware restored.
Alex_Tsarik
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The instance that I got was able to untie from Kyivstar, besides other (more complex) methods, using only the TFTP server.
Attached Image


Instructions and archive with the necessary files attached. Try it.
Attached fileWR840v2_KS_Change firmware TFTP.pdf(195.01 KB)
Attached fileWR840v2_KS_TFTP.rar(7.25 MB)


Post has been editedAlex_Tsarik - 17.01.17, 11:06
f0kysnik
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Unfortunately, this instruction does not work. Firmware firmware as a router takes, and while it does not restart. How many times did not try. It just turns off. And when I turn on - again the COP
svoi777
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The method with uboot works, I confirm, I uploaded a boot loader with a programmer, went after a clamped reset to 192.168.1.1 and updated the firmware to the factory one, rebooted and in 192.168.0.1 in the Tlinkovskoy form again updated the firmware to the factory ...
f0kysnik
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How did you connect the flash drive directly to the router?
svoi777
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The 25Q64 flash drive is soldered to the router, it is soldered and inserted into the programmer ...HUAWEI WS319 (Post kestua # 41607902)
Herzz
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18.01.17, 10:44
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* svoi777
Make a full dump if you can.
Andrew822
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Has anyone already managed to test the TL-WR840N V4?
In theory, unlike in previous revisions, the percentage should be 650 MHz and 8 MB flush.
A good router should be. Still, wait until when OpenWRT is finished under it so that it becomes without dancing with a tambourine, and out of the box, so to speak.
terakon
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emulator


--------------------
Lenovo P2 4/64 P2c72 (Xtended XP5)
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Herzz @ 01/18/17, 09:44*
Make a full dump if you can.

full dump of original CS firmware
full dump firmware untied from the COP
The only thing I do not remember, in the untied firmware, which boot, Chinese or tp-link-ovsky. you can understand by the indicator - power. lit - it means the boot from tp-link, no - it means Chinese. this does not affect the router's robustness, only the indication.
Herzz
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22.01.17, 14:51
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in the untied firmware which boot

Standard. Winhex looked

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