Hi guys,

I want to upgrade flash of WR843ND (its 841v8), but i dont know which should i order.

5x W25Q16DVSIG (16MB Winbond SPI) for $2.99
or
1x W25Q32B (32MB Winbond SPI) for $2.42

I know that 16MB is supported and 32MB should be too, but i want to be sure before i buy. These listing are ending soon so can somebody reply quickly?

W25Q16DVSIG == 16 Mbit == 2 MiB
W25Q32B == 32 Mbit == 4 MiB

You should buy for example Winbond W25Q128 (128 Mbit == 16 MiB).

Thanks much, i forgot that they use size description in Mbits.

Which DRAM chip should i use for upgrade? I got spare GoodRam 512MB DDR 400. It have only 4 chips on each side so they are 64MB.

(Last edited by Snoop05 on 14 Jun 2015, 20:19)

Look here: http://wiki.openwrt.org/toh/tp-link/tl- … mb_ram_mod

You need chip with 32Mbit x 16bit organization.
Your GOODRAM module has memories with 64Mbit x 8bit organization and they will not work.

I can recommend Samsung K4H511638J-LCCC.

The laptop size DDR1 modules usually have x16 chips.

I plan to upgrade ram, and flash (and maybe add usb port) on my 843v1 (841v8 clone - same board, same fw). RAM still haven't arrived but it have at least the 16MB SPI flash. I know that i need to flash pepe2k's u-boot in it. I got RPi2 that can be used for TTL serial, JTAG or as SPI programmer. I cloned both openwrt and uboot repository. Do i need to compile openwrt for 16MB or i can use official images? Can somebody write here steps needed to build openwrt for 841v8? I cant find anything specific on openwrt buildroot wiki.
Thanks much

EDIT: How to wire W25Q128? I connected pins 2 and 7 to VCC but it cant read or write. Flashrom says something about OTP (One Time Program) how to turn it off?

(Last edited by Snoop05 on 7 Jul 2015, 23:58)

I just updated to Chaos Calmer, using http://downloads.openwrt.org/chaos_calm … pgrade.bin , and all seems well !

(Last edited by jvhaarst on 12 Sep 2015, 06:32)

Hi, I have 841ND v8.2 with installed DD-WRT DD-WRT v24-sp2 (12/22/14) std(SVN revision 25697). I want to safely try openwrt.
How I switch from ddwrt to openwrt? I found link on ddwrt forum, but link is not work, ddwrt forum is locked. Thank you.

EDIT:
Here I found ho to do this:
https://samhobbs.co.uk/2013/11/switch-f … 30-minutes
And here I found webrevert firmware
http://www.dd-wrt.com/phpBB2/viewtopic. … p;start=30

And also found solution here:
https://dd-wrt.com/wiki/index.php/TP-Link_TL-WR841nd_v8

I try it.

(Last edited by wanthom on 25 Sep 2015, 18:37)

Hi guys,
New to open wrt system. Replaced the stock software today in my 841n v8.4 with chaos calmer. Everything went just fine, but my wifi speed on laptop halfed, according to the speedtest.
I get internet via pppoe from my isp.
Any ideas on how i can do anything about it?
Thanks.

Please upload this firmware (841n v8) or other fw included USB storage support.
Thank you/Спасибо.

https://yadi.sk/d/eEsgh8HjmefFi держи, там только версия ядра другая. block-mount, kmod-fs-ext4, kmod-usb-storage, usbutils уже включены в образ.

(Last edited by uboot on 3 Jan 2016, 20:56)

Спасибо. Пробовал разные версии собирать, с разным набором модулей, но так и не заставил работать 841-й с USB флешкой - не видит он ее., хотя с 741 проблем не было - припаял проводки + 7805 +разъем. Решил проблему с увеличением root(/overlay) заменив флешину на 64-х мегабитную и некоторой правкой бинарника.

Hello! I have TL-WR841 with OpenWRT Barrier Breaker (r39406). It works perfectly except one problem. The router have 4 LAN ports and 1 WAN port. As I think all LAN ports works with internal switch. But LAN hosts cannot communicate from one to another, all traffic is blocked. I have 2 PCs with wired connection and a managed PLANET switch with its own IP address. I can't ping PC2 from PC1, I can't access PC1 from PC2, I can't access PLANET from PC1 and from PC2 etc.
So I have a question: what's wrong? Maybe OpenWrt's firewall settings? There is no firewall on all my PCs at all.

Привет! У меня TL-WR841, версия OpenWRT Barrier Breaker (r39406). Работает отлично, за исключением одной проблемы: хосты, включенные в порты LAN, не видят друг друга, не пингуются и никак не доступны. Фаерволл на хостах отсутствует. Интернет на всех хостах нормальный, WiFi-клиенты работают и видят хосты в LAN. В чем может быть проблема? Что в фаерволле OpenWRT надо подкрутить?

В стандартной конфигурации никаких ограничений на lan нет, проверь сетевые настройки на компах, особенно маску подсети.

Да все в порядке с маской, она везде /24. Пинг идет на роутер, пинг идет с роутера на любой из хостов в сети, а между хостами ничего не ходит... конфигурация несильно менялась, добавлена гостевая зона WLAN с другой подсетью, из нее доступ к хостам LAN закрыт. VLAN не используются. Фаервол на хостах отключен, в качестве хостов используются компьютеры, еще один роутер TL-MR3020 с OpenWRT, управляемый коммутатор Planet

Hey guys, I'm having some trouble to install the USB port on my router.
I did the soldering (don't know if the wires are correctly soldered to the pins though).
The main problem is that I don't know which firmware should I use and which patches to use. I was reading this forum and I forced flash the latest build of the 3420v2 + usbutils.

When I type lsusb on the terminal the only thing that is showing is
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

Should I change the firmware? Solder again..? It's really difficult to solder that small pins

(Last edited by brunomenezesmg on 4 Feb 2016, 06:15)

Nevermind, I've discovered what I was doing wrong. I was using an external usb cellphone charger as power source to the USB port. The problem is that the Atheros chip (USB) needs the Ground and 5v to close the circuit and enable both D+ and D-
Now everything works.
In a few days I'm gonna post here some pics

Ok. Here are my little project:

I'm using my 841n v8 as a Printer Server / Scanner Server / Torrent Client.
The Printer Server is handled by P910ND, the Scanner Server by SANE and the Torrent by Transmission. The Printer/Scanner is a EPSON TX300F.
On the Client side (me and my house, we're all running Windows 10).

* The Printer Server isn't reliable yet because sometimes when a print job is sent to the printer it can take ages to start printing or start printing right away.

* The Scanner Server is working like a hell! JUST PERFECT! Can't even describe how flawless it is! Never had a issue since installing/configuring SANE.

* The Torrent side of my project is a little weird right now, I'm not reaching the full speed of my connection (5mbits ~ 575kb/s). Maybe my pendrive is very slow or even the router's RAM is filling up and throttling the download speeds. Sometimes using the Transmission web interface gives me errors about data loss between my browser and transmission web interface. If anyone has tips on this I'll be grateful.

I have to say, to solder those wires to that small pins... Jesus... I have shaky hands, you guys can't even know how difficult it was to me.

To starters like me, I don't know how to patch a kernel and enable the Atheros to listen and send data through D- and D+ so I used uboot's firmware posted on this forum. Worked well, but it was compiled using trunk and trunks change a lot, so I was not able to use other packages than those provided on the zip file. For now I'm using a pre-enabled D+ and D- firmware (from the 3420v2), the problem here is the space left to the user to install storage support. So I had to compile a Chaos Calmer stable image without LUCI and with some packages already built in to save space. Worked like a charm. for anyone who needs this firmware you can  DOWNLOAD IT HERE.

The second step was install an USB hub WITH external power supply. At first I was not aware about the lack of power this router Power Supply is capable of provide. Even building a relative good circuit to provide power, I didn't noticed that the Power Supply is only 500 mAh! So this caused a lot of problems and it was the last thing I've checked hahaha. I'm planning to build or buy another one with greater capabilities (at least 2000 mAh).

The third step was to enable my pendrive as extroot. Went in some problems here because my swap partition was mounting twice. Had to disable for now. Using normal ram until I find out the problem here.

The fourth step was about installing all packages I need. Now I have plenty space. My /overlay partition of extroot is 512mb.

The fifth step was configure and enable the Printer, Scanner and Transmission.

Here are my pictures hacking the device (too ZOOM IN just open the image on a new tab):

Improving the design. I did this to avoid putting more noise on the PCB using powered wires

(Last edited by brunomenezesmg on 18 Feb 2016, 14:00)

yes, same issue here but with dd-wrt.

solved doing on every startup (task):

swconfig dev eth1 set enable_vlan 1
swconfig dev eth1 set apply

http://www.dd-wrt.com/phpBB2/viewtopic. … highlight=

(Last edited by vazromju on 4 Mar 2016, 14:28)

Just finished a real 841n v8 DesignatedDriver build.

- Unlocked uboot partition (you can flash and use pepe2k uboot mod)
- Enabled USB D+ D- lines
- Ready for Extroot: included block-mount, kmod-usb-core. kmod-usb2, kmod-usb-printer, kmod-usb-storage, kmod-usb-storage-extras, kmod-fs-ext4, kmod-ledtrig-usbdev and usbutils

- Not present ( must be installed after extroot): LuCI

DOWNLOAD IT HERE.

Cheers

Hi.

I´m new here. So maybe sorry about for any already repeatedly asked questions.

I drive a TP WR841N v8 Router with DD-WRT v3.0-r29440 std (04/11/16). But I´m missing the "Services / VPN / "OpenVPN" functionality.

So here my question. Will I get these functionality with OpenWRT / "openwrt-15.05.1-ar71xx-generic-tl-wr841n-v8-squashfs-factory" firmware?

Thx for all your support.

Chaos Calmer 15.05.1 build

- Unlocked uboot partition (you can flash and use pepe2k uboot mod)
- Enabled USB D+ D- lines
- Ready for Extroot: included block-mount, kmod-usb-core, kmod-usb2, kmod-usb-printer, kmod-usb-storage, kmod-fs-ext4 and kmod-ledtrig-usbdev
- Not present ( must be installed after extroot): LuCI

DOWNLOAD IT HERE.

Cheers

Thank you very much for your post. My ISP also uses vlan 12 for Internet and i was having a hard time trying to create vlan 12 on eth0. Creating a custom eth0.12 solved my problem for now.

(Last edited by phokas860 on 21 Jul 2016, 23:33)

Hello guys, another fresh build to our beloved TL-WR841n v8

Chaos Calmer 15.05.1 build (21/10/2016)

- Unlocked uboot partition (you can flash and use pepe2k uboot mod)
- Enabled USB D+ D- lines
- Ready for Extroot: included block-mount, kmod-usb-core, kmod-usb2, kmod-usb-printer, kmod-usb-storage, kmod-usb-storage-extras, kmod-fs-ext4, kmod-ledtrig-usbdev and sqm-scripts

- Not present ( must be installed after extroot): LuCI

DOWNLOAD IT HERE.

Cheers

Hello Bruno,

You can help me with usb mod? How i can pm you?