|Brand||Model||Version||Current Release||OEM Info||Forum Topic||Technical Data|
The WZR-1750DHP model has at least two hardware revisions:
|Model||Version||Current Release||Firmware OpenWrt Install||Firmware OpenWrt Upgrade||Firmware OEM Stock|
Please add the installation procedure here.
Reverting from OpenWrt to the
wzr1750dhpd-v24sp2-23709c.bin vendor image is safe and easy to do through the LUCI web interface
J14 is the CFE console and Linux console at
ttyS0. It ships with a four-pin header installed and is compatible with PL2303 adapters.
The J14 pinout from the key pin (a white triangle) is:
The positive pin does not require power, but it can keep the SoC running, and it must be disconnected to completely reset the hardware.
As of OpenWrt 15.05 (Chaos Calmer):
As of OpenWrt r47881 (Designated Driver):
The USB error in the dmesg is:
hub 1-0:1.0: USB hub found hub 1-0:1.0: config failed, hub doesn't have any ports! (err -19)
As of LEDE 17.01:
[ 5.081275] bcm_ns_usb3 18105000.usb3-phy: Registered Broadcom Northstar USB 3.0 PHY driver
CFE version 22.214.171.124 (r377098) based on BBP 1.0.37 for BCM947XX (32bit,SP,) Build Date: Thu May 8 19:47:46 JST 2014 (email@example.com) Copyright (C) 2000-2008 Broadcom Corporation.
This build does not have a USB driver and can be rescued only through TFTP.
Uploading the openwrt .trx as a firmware upgrade using Buffalo's stock web interface is rejected as invalid firmware. Note that with stock firmware revisions v2.27 (and probably higher), uploads of non-Buffalo firmware and firmware older than v2.27 are blocked by the web interface. If you have a unit shipped with such a firmware, you can manually override this check as documented at https://www.dd-wrt.com/phpBB2/viewtopic.php?p=783040 and summarized here:
One option is to first go through DD-WRT as described nicely at http://kdpeter.blogspot.co.at/2015/03/buffalo-wzr-1750dhp-openwrt.html?m=1 and summarized here (note that the first 2 steps will already by done if you followed the above steps to downgrade from v2.27):
The second option is to go directly through TFTP with uboot. Buffalo routers typically default to address 192.168.11.1, and the WZR-1750DHP uses the same in uboot. Timing is difficult to get right, one option is to start the following on the command line (assuming a Linux host) immediately after plugging in the router (connected to a LAN port):
sudo ip a a 192.168.11.7/24 dev <your ethernet interface>; atftp 192.168.11.1 --verbose -p -l openwrt-bcm53xx-buffalo-wzr-1750dhp-squashfs.trx
* Note: I have not yet managed to make this work on a new WZR-1750DHP running Buffalo firmware v2.27! It seems that this firmware will (currently) no longer support flashing anything non-Buffalo. *
CFE>prompt in the terminal window.
flash -noheadercommand to the nflash1.trx device.
The console transcript on the WZR-1750DHP should look like this:
CFE> ifconfig eth0 -addr=192.168.0.99 Device eth0: hwaddr 00-11-22-33-44-55, ipaddr 192.168.0.99, mask 255.255.255.0 gateway not set, nameserver not set *** command status = 0 CFE> flash -noheader : nflash1.trx Reading ::
Double-check that the nflash1.trx argument is entered exactly correct here and then start the TFTP client…
Reading :: Done. 7733248 bytes read Programming...done. 7733248 bytes written *** command status = 0 CFE> go check_trx: start nflash1.trx check_trx: exit nflash1.trx Loader:raw Filesys:raw Dev:nflash0.os File: Options:(null) Loading: .. 1263056 bytes read Entry at 0x00008000 Closing network. Starting program at 0x00008000 Uncompressing Linux... done, booting the kernel.
The TFTP client transcript should look like this:
$ tftp 192.168.0.99 tftp> verbose Verbose mode on. tftp> mode octet mode set to octet tftp> put openwrt-15.05-bcm53xx-buffalo-wzr-1750dhp-squashfs.trx putting openwrt-15.05-bcm53xx-buffalo-wzr-1750dhp-squashfs.trx to 192.168.0.99:openwrt-15.05-bcm53xx-buffalo-wzr-1750dhp-squashfs.trx [octet] Sent 7733248 bytes in 2.9 seconds [21390263 bit/s]