TP-LINK TL-WR740N v4

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dabyd64
DD-WRT User


Joined: 27 Sep 2011
Posts: 112

PostPosted: Sun Sep 09, 2012 0:32    Post subject: Reply with quote
There are more things using CPU power that processes: IO, interrupts...
Openwrt its more complex. By default it only has telnet / ssh access.
But there's a web interface called LUCI which is similar. To flash openwrt you must flash the revert file first(go back to stock firmware) in the dd-wrt web upgrade, and then upgrade to openwrt with the stock firmware update.
here's the revert file: http://dl.dropbox.com/u/23958662/wr740nv4_webrevert.bin

And here the openwrt firmware: http://downloads.openwrt.org/snapshots/trunk/ar71xx/openwrt-ar71xx-generic-tl-wr740n-v4-squashfs-factory.bin

Openwrt has wifi disabled by default, you must connect to it by ethernet.
Once it boots with the openwrt flashed, connect by telnet to 192.168.1.1
You will have to connect it to the switch of a router or something that can give internet.
so, if the main router has also 192.168.1.1 IP, you must change the openwrt ip first, to other range.
This is easy, by doing:

cd /etc/config
vi network

Then under "lan" section, change the 192.168.1.1 to 192.168.10.1, for example.
To insert text, press "i" first
Press ESC to return to normal mode
To exit saving the changes, go to normal mode and quickly press Shift+Z twice.
To discard any change press Control+Z
If you still don't know how Vi Editor works, check on the internet.
Once done, reboot to apply, then connect another ethernet cable between a switch and the openwrt router wan port, openwrt will automatically get internet if the main router has DHCP.
Connect again with telnet to the IP you set.
Check you have internet by doing ping google.es -w 4
If you get response, carry on.
Now do this commands

opkg update
opkg install luci
/etc/init.d/uhttpd enable
/etc/init.d/uhttpd start

After the last command, you will have the web interface, by entering the openwrt IP you set before in a web browser.
By default there is no password, just hit enter with a blank password.
There you can configure almost everything.

Keep in mind that a repeater and wireless bridge are a bit harder to make in openwrt. Check the openwrt forums for the configs, in the How To section.
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lethalfang
DD-WRT User


Joined: 12 Jul 2009
Posts: 100
Location: San Francisco, CA

PostPosted: Sun Sep 09, 2012 7:08    Post subject: Reply with quote
Thanks, dabyd64.
Looks like there are quite a lot of things to play around in OpenWRT. I'll give it a try.
d.casper.b
DD-WRT Novice


Joined: 12 Sep 2012
Posts: 2
Location: Cape Town, South Africa

PostPosted: Wed Sep 12, 2012 10:09    Post subject: TL-WR740N v4.23 Reply with quote
Hi all

I know you hate this question but i cannot find much clarity..

I just got the TP-Link TL-WR740N v4.23 yesterday & would like to flash dd-wrt onto it. I don't know what version to use - it doesn't seem that there's a stable release for this device. I don't really want a device that is not fully functional; although, I'm only connecting my modem to the WAN port (configured to PPPoE, put my credentials in etc), and connecting my PC to the LAN, and the WiFi signal is for my cellphone (and notebook). So, what should I flash, and in what order?

I have the current latest stock firmware (3.12.11 Build 120320 Rel.51047n).
dabyd64
DD-WRT User


Joined: 27 Sep 2011
Posts: 112

PostPosted: Fri Sep 14, 2012 23:58    Post subject: Reply with quote
The firmware is almost working, just few bugs, but it won't affect in most setups.
Try the latest dd-wrt, or openwrt if you want something more complex but with a deeper user manipulation (you can manually configure more parameters).

Latest dd-wrt: ftp://dd-wrt.com/others/eko/BrainSlayer-V24-preSP2/2012/07-20-12-r19519/tplink_tl-wr740nv4/factory-to-ddwrt.bin

Latest openwrt: http://downloads.openwrt.org/snapshots/trunk/ar71xx/openwrt-ar71xx-generic-tl-wr740n-v4-squashfs-factory.bin

For any of them, upgrade in the web interface, in the section "firmware upgrade".
Connect with ethernet, not wifi, as a casual wifi disconnection during the upgrade may damage the router firmware.

I'd suggest that you search about the configuration of them before you upgrade.
If your computers knowledge is low, I'd suggest you to go with dd-wrt.
Its web interface is user friendly, and you will get your wan connectiong working fast.
If you find problems like low internet speed or usual disconnections it could be some bug in dd-wrt...then go for openwrt.
regards
d.casper.b
DD-WRT Novice


Joined: 12 Sep 2012
Posts: 2
Location: Cape Town, South Africa

PostPosted: Sat Sep 15, 2012 20:42    Post subject: Reply with quote
Thank you

I've installed the latest dd-wrt, and all is working. Wink
uhmhello1807
DD-WRT Novice


Joined: 22 Sep 2012
Posts: 3

PostPosted: Sat Sep 22, 2012 16:26    Post subject: Reply with quote
I'm using tp link wr740n v4
i've upgraded dd-wrt 20/7...but i don't know why TX Power wrote 20dbm , but status system wrote 18dbm.
i want to increase tx power my wr740n >20dbm
how can i do?
Thanks for your help
dabyd64
DD-WRT User


Joined: 27 Sep 2011
Posts: 112

PostPosted: Sun Sep 23, 2012 13:51    Post subject: Reply with quote
18dBm is the maximum that the AR9331 hardware is able to output.
joseph
DD-WRT Novice


Joined: 22 Sep 2012
Posts: 5

PostPosted: Sun Sep 23, 2012 23:48    Post subject: Reply with quote
hi
I've tried upgrading wr741nd v4 according to dabyd64 (gui upgrade).
I got the error:
"Error code: 18005
Upgrade unsuccessfully because the version of the upgraded file was incorrect. Please check the file name."
I've tried to change the file name to one of the TP-Link upgrade file names yet it failed.
My firmware is the latest in the TP-Link site: WR741ND_V4_120320.
Should I down-grade to some version in order to upgrade to the dd-wrt version?
should I try tftp? [how & when can I cause the wr741 to accept the put file?]
Please advice
LOM
DD-WRT Guru


Joined: 28 Dec 2008
Posts: 7647

PostPosted: Mon Sep 24, 2012 0:44    Post subject: Reply with quote
joseph wrote:
hi
I've tried upgrading wr741nd v4 according to dabyd64 (gui upgrade).
I got the error:
"Error code: 18005
Upgrade unsuccessfully because the version of the upgraded file was incorrect. Please check the file name."


So what is the full file name of the file causing the above error?
Where did you get the file?

_________________
Kernel panic: Aiee, killing interrupt handler!
joseph
DD-WRT Novice


Joined: 22 Sep 2012
Posts: 5

PostPosted: Mon Sep 24, 2012 7:44    Post subject: Reply with quote
Thanks for the replay.
I used the link dabyd64 offered (prefer the dd-wrt for the web gui & haven't tried the openwrt yet):
ftp://dd-wrt.com/others/eko/BrainSlayer-V24-preSP2/2012/07-20-12-r19519/tplink_tl-wr740nv4/factory-to-ddwrt.bin


I made several trails with several names including:
1. v2.bin [according to https://forum.openwrt.org/viewtopic.php?id=36735 yes not same model but same issue.. didn't worked for me. + trying the GargoyleRouter now.]
2. wr741nv4_en_3_12_11_up(110914).bin [tp-link official name for one of the updated tools in the site]
3. wr741nv4_en_3_12_11_up(120320).bin [official update name of my version]
4. wr741nv4_en_3_12_11_up(120620).bin [increased the version number for the sake of validation check of "updates only"]

all of them failed with the same error "Error code: 18005..."

using the GargoyleRouter gargoyle_1.5.7-ar71xx-generic-tl-wr741nd-v4-squashfs-factory.bin I was able to flash to the GargoyleRouter - and will try the dd-wrt Very Happy

just for enriching my knowledge any idea why it failed? since file name probably isn't the issue are there keys which failed validation?
joseph
DD-WRT Novice


Joined: 22 Sep 2012
Posts: 5

PostPosted: Mon Sep 24, 2012 11:17    Post subject: Reply with quote
did the games late night and just now saw that I've tried the 740 not the 741...
so I've downloaded the
ftp://dd-wrt.com/others/eko/BrainSlayer-V24-preSP2/2012/07-20-12-r19519/tplink_tl-wr741ndv4/tl-wr741ndv4-webflash.bin

Tried it again (have 2 routers in my setup..) & got the same error.
+
The gargoyle-router refuses to upgrade this file as well (not sure if it's a bug or I should used the factory file or that there is an issue with the file).

please advice.
dabyd64
DD-WRT User


Joined: 27 Sep 2011
Posts: 112

PostPosted: Tue Sep 25, 2012 17:05    Post subject: Reply with quote
Try the factory-to-ddwrt instead the webflash version.
The webflash is exclusive for dd-wrt.
If it still doesn't work, return to the stock firmware and then flash the factory-to-ddwrt version.

ftp://dd-wrt.com/others/eko/BrainSlayer-V24-preSP2/2012/07-20-12-r19519/tplink_tl-wr741ndv4/factory-to-ddwrt.bin
statequieta
DD-WRT Novice


Joined: 26 Sep 2012
Posts: 2

PostPosted: Wed Sep 26, 2012 17:56    Post subject: Reply with quote
Hi!

I have bought a brand new WR740N v4 and right after i have installed dd-wrt firmware. Flawless. The question is: How can I set up the repeater mode?

cheers!
joseph
DD-WRT Novice


Joined: 22 Sep 2012
Posts: 5

PostPosted: Wed Sep 26, 2012 21:34    Post subject: Reply with quote
hi dabyd64 that worked Very Happy
Thanks allot Smile
dabyd64
DD-WRT User


Joined: 27 Sep 2011
Posts: 112

PostPosted: Wed Sep 26, 2012 22:40    Post subject: Reply with quote
statequieta wrote:
Hi!

I have bought a brand new WR740N v4 and right after i have installed dd-wrt firmware. Flawless. The question is: How can I set up the repeater mode?

cheers!

search a bit, the forum and the wiki...
simple as:
http://www.youtube.com/results?search_query=dd-wrt+repeater
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