Flashing DD-WRT onto Asus RT-N66U

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rocky13
DD-WRT User


Joined: 25 Apr 2008
Posts: 154

PostPosted: Sat May 26, 2012 15:28    Post subject: Reply with quote
use build 18946, it fixes the WAN port issue.
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rafatutihashi
DD-WRT Novice


Joined: 25 May 2012
Posts: 2

PostPosted: Sat May 26, 2012 15:48    Post subject: Reply with quote
Where can i find the firmware to download?
Do i need to restore the factory firmware and start it all over again? or can i just upgrade the firmware i'm using (18702)?
joecop67
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Joined: 09 Feb 2012
Posts: 425
Location: Columbus, Ohio

PostPosted: Sat May 26, 2012 18:58    Post subject: Reply with quote
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Last edited by joecop67 on Wed Aug 29, 2012 20:32; edited 2 times in total
inf
DD-WRT Novice


Joined: 28 Jun 2012
Posts: 3

PostPosted: Thu Jun 28, 2012 5:01    Post subject: Reply with quote
Tried to flash DD-WRT yesterday.

I think i did something totally wrong...it seems that the box is now in somekind strange status. The power light is on but it doesn't even try to get connection from WAN

I used the instruction on the wiki http://dd-wrt.com/wiki/index.php/Asus_RT-N66U
inf
DD-WRT Novice


Joined: 28 Jun 2012
Posts: 3

PostPosted: Thu Jun 28, 2012 18:17    Post subject: Reply with quote
Ok got DD-WRT flashed with the asus recovery tool.

But I can't get the box to connect to WAN. WAN gets no ip at all. I flashed the build mentioned on the wiki pages (18946 BIG). What is the difference with big and mega?

I'll test with the 19xx build
inf
DD-WRT Novice


Joined: 28 Jun 2012
Posts: 3

PostPosted: Thu Jun 28, 2012 18:54    Post subject: Reply with quote
Well i got it working with the 19xx build from BS
petrpastor
DD-WRT Novice


Joined: 30 May 2010
Posts: 19
Location: United Kingdom

PostPosted: Fri Jun 29, 2012 20:31    Post subject: Reply with quote
Hi all,

Just got mine 66u today. found

a bit hard work to get dd-wrt work.

From experience 10 minutes waiting is bit exadurated more like 3 to 5 minutes.

what is most important is the command:

http://192.168.1.1/do.htm?cmd=nvram+commit

without applying this one ddwrt does not boot.

one thing I found when using Asus's firmware recovery tool - if you have wireless card turned on on your laptop the tool would not connect to router (gets confused by two lan interfaces). works when you turn wifi card off.

Petr
gatorback
DD-WRT User


Joined: 04 Feb 2007
Posts: 426
Location: Fountain of Youth

PostPosted: Mon Jul 09, 2012 22:00    Post subject: Reply with quote
joecop67 wrote:
rafatutihashi wrote:
Where can i find the firmware to download?
Do i need to restore the factory firmware and start it all over again? or can i just upgrade the firmware i'm using (18702)?

I believe if you are already on dd-wrt you can flash the big build.
ftp://dd-wrt.com/others/eko/V24-K26/svn18946/dd-wrt.v24-18946_NEWD-2_K2.6_big.bin




Can anyone else confirm that this build is free of problems?

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adamchal
DD-WRT Novice


Joined: 31 May 2009
Posts: 10

PostPosted: Mon Aug 27, 2012 9:35    Post subject: Cannot install DD-WRT Reply with quote
I've killed about 4 hours trying to get DD-WRT installed on my Asus RT-N66U. I've followed all of the steps in this post, but I cannot get any version (tried 18702, 18946, 19342, 19519) of DD-WRT to boot (mini, big, mega, etc.). I tried using the web gui and the utility with each version.

I use a static IP configuration on my desktop the entire time.

I'm able to flash the original Asus firmware back onto the device and that works.

Once I upload a DD-WRT through the web guy or utility, I wait 10 minutes, restart it in recovery mode, successfully reset NVRAM, then reboot. The device boots, both wireless LEDs go solid, but I can never ping 192.168.1.1 or access it via the browser.

Anybody have any idea what might be going on here?
gatorback
DD-WRT User


Joined: 04 Feb 2007
Posts: 426
Location: Fountain of Youth

PostPosted: Mon Aug 27, 2012 13:17    Post subject: Reply with quote
As I understand it, there is a not enough NVRAM allocated for this dual band radio. 64kb is needed and only 32kb is allocated. That being said, modded firmware that overcomes this problem is here:

http://www.lostrealm.ca/tower/node/79

I am hoping that someone will tell me I'm wrong and that this problem has been overcome.

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adamchal
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Joined: 31 May 2009
Posts: 10

PostPosted: Mon Aug 27, 2012 13:21    Post subject: Reply with quote
So, have others applied a fix for the 64Kb NVRAM before using any dd-wrt firmware versions? I see that a bunch of the dd-wrt firmware versions have a 32Kb NVRAM and 64Kb NVRAM versions. I've been trying to install the 32Kb NVRAM versions, but have had absolutely no success.
gatorback
DD-WRT User


Joined: 04 Feb 2007
Posts: 426
Location: Fountain of Youth

PostPosted: Mon Aug 27, 2012 13:34    Post subject: Reply with quote
As I understand it, the 'fix' needs to be in the dd-wrt firmware. My understanding of the NVRAM allocation is weak at best.
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adamchal
DD-WRT Novice


Joined: 31 May 2009
Posts: 10

PostPosted: Wed Aug 29, 2012 3:50    Post subject: Reply with quote
Well, I was able to install the firmware from http://www.lostrealm.ca/tower/node/79 successfully, but after that I tried to install dd-wrt.v24-19342_NEWD-2_K2.6_mega (no luck) and then tried dd-wrt.v24-19342_NEWD-2_K2.6_mega-nv64k with no luck either.

This is getting really frustrating. I've installed dd-wrt on Linksys devices tons of times with no problems. What is happening here?
shibby20
DD-WRT Novice


Joined: 08 Jan 2010
Posts: 28

PostPosted: Wed Aug 29, 2012 7:45    Post subject: hmm Reply with quote
tomato already supported 64K mod for this router Smile

Model Asus RT-N66U
Chipset Broadcom BCM5300 chip rev 1 pkg 0
CPU Freq 600MHz
Flash Size 32MB

Time Wed, 29 Aug 2012 09:44:43 +0200
Uptime 2 days, 02:41:14
CPU Load (1 / 5 / 15 mins) 0.18 / 0.12 / 0.09
Total / Free Memory 249.74 MB / 230.18 MB (92.17%)
Total / Free NVRAM: 64.00 KB / 37.84 KB (59.13%)

Best Regards Smile
madman999
DD-WRT Guru


Joined: 11 Jun 2012
Posts: 1038

PostPosted: Wed Aug 29, 2012 19:17    Post subject: Reply with quote
so what is the state of DD-WRT on the RT-N66U?

what is the latest build and version to work?

Who has it working well?

from what I gather, because of the 32K/64K NVRAM issue, you should not use anything bigger than STD_USB_NAS?

Is the 5GHZ radio working?

this seems like an important command that should not be skipped

http://192.168.1.1/do.htm?cmd=nvram+commit
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