Buffalo WZR-1750DHP Flashing

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ggilman
DD-WRT Novice


Joined: 25 Aug 2010
Posts: 12

PostPosted: Thu Oct 13, 2016 17:27    Post subject: Reply with quote
Is there any consensus on a good stable build for the wzr-1750dhp? I'm currently running DD-WRT v3.0-r28493M std (12/10/15). It has been running like a champ but 10 month old firmware seems a bit dated.

I've tried pouring through the forums here but can't seem to find any real answers.
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pie1394
DD-WRT Novice


Joined: 09 Apr 2014
Posts: 44

PostPosted: Fri Oct 14, 2016 5:59    Post subject: Reply with quote
ggilman wrote:
Is there any consensus on a good stable build for the wzr-1750dhp? I'm currently running DD-WRT v3.0-r28493M std (12/10/15). It has been running like a champ but 10 month old firmware seems a bit dated.

I've tried pouring through the forums here but can't seem to find any real answers.


Here is my upgrading history with KongAC version:

r28000M 2015/10/27
r28600M 2016/1/10
r29165M 2016/3/3
r29440M 2016/5/1
r30370M 2016/8/11
r30560M 2016/9/7
r30600M 2016/9/18
r30700M 2016/9/28

It will get WiFi signal quality boosted since r30370M -- if my memory is not wrong.

To me the r30700M does not have any unstable issue on this unit with PPPoE, 4 SSID (WiFi 5G *2 , 2.4G * 2), OpenVPN (tap or tun), SSH tunnel, DNS Masquerade, USB2 pen drive (/jffs), QoS enabled. It was just asked that a NVRAM fully clean-up action is required when the FW is upgraded from r2xxxx to r3xxxx.

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Buffalo WZR-1750DHP
ggilman
DD-WRT Novice


Joined: 25 Aug 2010
Posts: 12

PostPosted: Fri Oct 14, 2016 19:32    Post subject: Reply with quote
pie1394 wrote:
ggilman wrote:
Is there any consensus on a good stable build for the wzr-1750dhp? I'm currently running DD-WRT v3.0-r28493M std (12/10/15). It has been running like a champ but 10 month old firmware seems a bit dated.

I've tried pouring through the forums here but can't seem to find any real answers.


Here is my upgrading history with KongAC version:

r28000M 2015/10/27
r28600M 2016/1/10
r29165M 2016/3/3
r29440M 2016/5/1
r30370M 2016/8/11
r30560M 2016/9/7
r30600M 2016/9/18
r30700M 2016/9/28

It will get WiFi signal quality boosted since r30370M -- if my memory is not wrong.

To me the r30700M does not have any unstable issue on this unit with PPPoE, 4 SSID (WiFi 5G *2 , 2.4G * 2), OpenVPN (tap or tun), SSH tunnel, DNS Masquerade, USB2 pen drive (/jffs), QoS enabled. It was just asked that a NVRAM fully clean-up action is required when the FW is upgraded from r2xxxx to r3xxxx.


Thanks! Upgraded to 30700M smoothly and seems to be running fine. I appreciate the help.
1nf3ct3d
DD-WRT Novice


Joined: 29 Oct 2016
Posts: 1

PostPosted: Sat Oct 29, 2016 10:43    Post subject: Official Buffalo Recovery Reply with quote
Out of curiosity, has anyone successfully restored a WZR-1750DHP with this official WZR-1750DHPD, (custom DD-WRT), recovery .enc file from Buffalo? It is my understanding that the hardware is the same for both devices.

http://s000.tinyupload.com/index.php?file_id=14359885463702110584

I've been trying on an actual 1750DHPD version of this device that was flashed to 1750DHP by a "tech" who thought he was doing us a favor by upgrading us to the latest 2.29 firmware and it keeps telling me invalid firmware version.
DaveTheNerd
DD-WRT User


Joined: 15 Jul 2008
Posts: 317

PostPosted: Sat Oct 29, 2016 13:57    Post subject: Re: Official Buffalo Recovery Reply with quote
1nf3ct3d wrote:
Out of curiosity, has anyone successfully restored a WZR-1750DHP with this official WZR-1750DHPD, (custom DD-WRT), recovery .enc file from Buffalo? It is my understanding that the hardware is the same for both devices.

http://s000.tinyupload.com/index.php?file_id=14359885463702110584

I've been trying on an actual 1750DHPD version of this device that was flashed to 1750DHP by a "tech" who thought he was doing us a favor by upgrading us to the latest 2.29 firmware and it keeps telling me invalid firmware version.


I was told by people deep inside Buffalo that the hardware for these two units is exactly the same, yes.
gravatasufoca
DD-WRT Novice


Joined: 21 Mar 2008
Posts: 4

PostPosted: Wed Dec 07, 2016 10:54    Post subject: Can't send ctrl+c on cfe Reply with quote
Hello everybody.

I bricked my WZR-1750DHP trying to update with the stock firmware. Now it just blink red and reboot all the time.

I tried to de-brick it with a usb-ttl cable, but I had a lot of strangers things.

First, when I connect the router RX to TX on usb, and the router TX to RX on usb and the ground of each, I can't see anything on console, and the router doesn't boot, it only light a green light on the back.
But when I revert the things (router RX to RX usb) and dont connect the ground, the router boots (in loop), I still can't see anything on console until a plug the ground again.
Now I see all the informations on screen, but I can't send the break key.
I only see things, but I can't send any command.

Does anyone have an idea of what is happening?
cpdohert
DD-WRT Novice


Joined: 12 Dec 2016
Posts: 5

PostPosted: Mon Dec 12, 2016 2:00    Post subject: Reply with quote
markreb wrote:
I have mine on build 28444 but the wireless connectivity has been terrible. I have been trying to flash another version but every time i try with a wired connection in the gui it starts the 300 second countdown gets to about 298 then my router starts flashing red three times and a pause the internet still works and wireless but i can no longer access the gui. I have tried all different versions i have also set a static ip of 192.168.1.8 on the computer i am trying to flash from along with a factory reset before.


I'm having the exact same problem.

I started with an out-of-the-box WZR-1750DHP running 2.09.

I downloaded the factory-to-dd-wrt.bin file from the router db (http://www.dd-wrt.com/site/support/router-database) page for the WZR-1750DHP.

30-30-30 reset the router.

Uploaded factory-to-dd-wrt.bin.

30-30-30 reset the router.

Used for about a day or so.

Downloaded the 28444 build from ftp://ftp.dd-wrt.com/betas/2015/12-05-2015-r28444/buffalo_wzr-1750dhp/
buffalo-wzr-1750dhp-webflash.bin

30-30-30 reset the router.

Uploaded 28444

30-30-30 reset the router.

Used for a couple of days. Noticed some issues with wifi, decided to switch to Kong's R30700M release recommended above. Downloaded from http://desipro.de/ddwrt/K3-AC-Arm/r30700/dd-wrt.v24-K3_AC_ARM_STD.bin

30-30-30 reset the router.

Tried to upload the .bin but I get the same behaviour described above: upload stops at 297 seconds, browser throws a connection reset error. Router still works but web gui is offline until I restart the router.

I'm going to try Kong's R30880 build (http://desipro.de/ddwrt/K3-AC-Arm/r30880/dd-wrt.v24-K3_AC_ARM_STD.bin) and the original build from the router DB page to see what happens.

Does anyone know why 28444 on the WZR-1750 is behaving like this? Is there something special I have to do to flash the Kong firmware?
cpdohert
DD-WRT Novice


Joined: 12 Dec 2016
Posts: 5

PostPosted: Mon Dec 12, 2016 2:28    Post subject: Reply with quote
Based on comments I saw elsewhere on the forum about 30-30-30 reset on ARM builds, I tried to erase the nvram instead and this happened:

Code:
root@DD-WRT:~# mtd erase nvram
Unlocking nvram ...
Could not unlock MTD device: nvram
nvram: Not supported
Erasing nvram ...
erase[65536]
root@DD-WRT:~#
Malachi
DD-WRT Guru


Joined: 17 Jul 2012
Posts: 5605
Location: Columbus, Ohio

PostPosted: Mon Dec 12, 2016 2:51    Post subject: Reply with quote
It's erase nvram. Not mtd erase nvram
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I am far from a guru, I'm barely a novice.
cpdohert
DD-WRT Novice


Joined: 12 Dec 2016
Posts: 5

PostPosted: Mon Dec 12, 2016 3:01    Post subject: Reply with quote
Thanks!

I'll give that a shot, but is there any reason to believe it's related?

I've now tried Kong R30700, R30880, the original webflash, and the recovery .enc file posted earlier in this thread, and non of them are accepted by the router's webgui.

I am the proud owner of a WZR-1750 irrevocably locked to BrainSlayer 28444, it appears :/
cpdohert
DD-WRT Novice


Joined: 12 Dec 2016
Posts: 5

PostPosted: Fri Dec 16, 2016 6:48    Post subject: Reply with quote
Update: I have also tried copying Kong R30880 to the router with sftp, and from an ssh session into the router, running

erase nvram
write dd-wrt.v24-K3_AC_ARM_STD.bin linux

After five seconds or so, the ssh connection is reset by the router. I waited five minutes, then rebooted the router. It came up with....BS 28444.

It's like the firmware is locked somehow.
lfb
DD-WRT Novice


Joined: 13 Nov 2016
Posts: 1

PostPosted: Fri Dec 30, 2016 21:52    Post subject: Reply with quote
28444 has a bug in the web- upgrade function. I fixed my 1750 as supposed in this thread:
http://www.dd-wrt.com/phpBB2/viewtopic.php?t=303782&postdays=0&postorder=asc&start=0

HalfBit wrote:
...
There's also the first step to figure out how to get the file onto the router (either attached USB or HDD, or SCP to transfer the file).

On WinSCP:
1 Select New Site;
2 File protocol: SCP;
3 Hostname: your router IP; Default port is 22, but may vary depending on custom configs
4 Username: root
5 Password: your admin pass
6 Drag downloaded firmware from Download folder and drop in /tmp

On PuTTY;
1 SSH or telnet to your router's IP address.
2 Login using root user and admin password;
3 Type:
cd /tmp (Enter)
mtd -r write xxxxx.bin linux (Enter) (Replace xxxxx with your firmware filename...)
Hope that can help?
cpdohert
DD-WRT Novice


Joined: 12 Dec 2016
Posts: 5

PostPosted: Sat Dec 31, 2016 3:24    Post subject: Reply with quote
Bloody hell, that's done it. Thanks!!
alexyr
DD-WRT Novice


Joined: 12 Apr 2015
Posts: 5

PostPosted: Sat Jan 14, 2017 7:45    Post subject: Reply with quote
Finally I managed to recover my Buffalo and flash DD-WRT.
(search for my posts for full story)
I downloaded last webflash bin file from router database.
Configured tftp-hpa on my ubuntu server to serve it as webflash.bin.
In cfe console (usb to ttl adapter and Putty):
(I used ifconfig for setting IP and GW...)
flash -erase -offset=0 nflash1.trx
flash -noheader -size=27615232 192.168.0.106:webflash.bin nflash1.trx
reboot

(-size= is the bin file size)
ChristianFr
DD-WRT Novice


Joined: 17 Feb 2017
Posts: 1

PostPosted: Fri Feb 17, 2017 16:41    Post subject: dd-wrt https not secure err_cert_authority_invalid Reply with quote
Hi,

I upgraded my modem from:
http://desipro.de/ddwrt/K3-AC-Arm/r30700/dd-wrt.v24-K3_AC_ARM_STD.bin
(Note: I tried, r30965, but my modem refused the upgrade, so I took the r30700 which worked perfectly)

And for first time, I tried to enable https instead of http for remote access.

Since then, I get this error:
NET: err_cert_authority_invalid

Does someone has an idea?

Thank you for reading, and thanks to those who work on this project.

Christian (from France)
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