[SOLVED] Netgear R8000 Firmware Not Compatible

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egc
DD-WRT Guru


Joined: 18 Mar 2014
Posts: 3640
Location: Netherlands

PostPosted: Tue Mar 19, 2019 7:55    Post subject: Reply with quote
It appears that you can simply change the header of the DDWRT chk file as described here (the following is a snippet or the R6400v2 install guide:

Quote:
Recent reports indicate that Netgear is checking the actual build number and does not let you downgrade.
As DDWRT has no build numbers set into the files, it is possible that you can not upgrade to DDWRT.
If you run into this situation you can contact me for a possible solution or modify the header of the .chk file to include a higher build number.
see: https://bugs.openwrt.org/index.php?do=details&task_id=2009.
https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=318557

_________________
Routers:Netgear R7800, Netgear R6400v1, Netgear R6400v2, Linksys EA6900 (XvortexCFE), Linksys E2000 (converted WRT320N), WRT54GS v1.
Install guide Linksys EA6900: http://www.dd-wrt.com/phpBB2/viewtopic.php?t=291230
Simple PBR (Policy Based Routing) script: https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=318662
Install guide R6400v2:http://forum.dd-wrt.com/phpBB2/viewtopic.php?t=316399
OpenVPN server setup guide:
https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=318795
Install guide R7800: https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=320614
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Abboo
DD-WRT Novice


Joined: 03 Apr 2016
Posts: 34

PostPosted: Thu Mar 21, 2019 3:46    Post subject: Reply with quote
i made changes to the header in dd-wrt .chk file and it would not upload. Error message: This firmware file is incorrect. Please get the firmware file again and make sure it is the correct firmware.

I used the GUI.

I do not have a usb ttl cable and I am a total novice, a beginner with an R8000 and wanting dd-wrt to run on it

The firmware in my router is V1.0.4.28_10.1.54
FCC ID: PY314200264
Made in Vietnam
272-12664-01
rwrjr
DD-WRT Novice


Joined: 14 Mar 2019
Posts: 3

PostPosted: Thu Mar 21, 2019 19:08    Post subject: Reply with quote
egc wrote:
It appears that you can simply change the header of the DDWRT chk file as described here (the following is a snippet or the R6400v2 install guide:

Quote:
Recent reports indicate that Netgear is checking the actual build number and does not let you downgrade.
As DDWRT has no build numbers set into the files, it is possible that you can not upgrade to DDWRT.
If you run into this situation you can contact me for a possible solution or modify the header of the .chk file to include a higher build number.
see: https://bugs.openwrt.org/index.php?do=details&task_id=2009.
https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=318557


If you're suggesting that you can use a hex editor to change the embedded version number I do not believe that will work. While it's true the version number is in the first several bytes I also believe there is one or more embedded checksums. At least that's what I gather from a quick read of the patch source code. Flipping bytes will make it fail any checksum check. You must build the OpenWRT CHK file using the patch in the the first link.
Abboo
DD-WRT Novice


Joined: 03 Apr 2016
Posts: 34

PostPosted: Fri Mar 22, 2019 0:41    Post subject: Reply with quote
I think what needs to be done is for, either or both, Kong and or BS to create a factory to dd-wrt to overcome this security update by Netgear.The downside will be novices, like me, will be lost and the benefits of not being able to enjoy third party open source will reduce demand for Netgear routers.

I wait for a software update. I have ordered a usb ttl cable online and have to wait about 2 months for delivery. Maybe there will be some new development while I wait.
Abboo
DD-WRT Novice


Joined: 03 Apr 2016
Posts: 34

PostPosted: Sun Mar 24, 2019 22:49    Post subject: Helped with Netgear R8000 Reply with quote
I must give thanks to Samus250 in get my brand new R8000 up and running. He was great and even though a novice like me did very little, I greatly appreciate what he has done and I will continue to learn from this forum.

Thanks Samus250
bboti86
DD-WRT Novice


Joined: 02 Apr 2019
Posts: 1

PostPosted: Tue Apr 02, 2019 10:43    Post subject: Re: Helped with Netgear R8000 Reply with quote
Abboo wrote:
I must give thanks to Samus250 in get my brand new R8000 up and running. He was great and even though a novice like me did very little, I greatly appreciate what he has done and I will continue to learn from this forum.

Thanks Samus250


Hey Abboo,

could your please share the file you've compiled that you've originally flashed?

THanks!
B
Abboo
DD-WRT Novice


Joined: 03 Apr 2016
Posts: 34

PostPosted: Tue Apr 02, 2019 14:04    Post subject: Reply with quote
Give me about 10 hours from now.
Abboo
DD-WRT Novice


Joined: 03 Apr 2016
Posts: 34

PostPosted: Wed Apr 03, 2019 0:28    Post subject: Reply with quote
Upload the attached file. When performing the below steps note the ip address of the router and the modem may be the same and if so, it will create conflict. I went into the modem and changed its ip address. When you are attaching the router to the modem ensure to connect the cable to the Wan port of the router. As usual when you flash the router make sure only the computer is connected to the router via the Lan port. In performing the below tasks you will need to connect to the internet


Don't hard reset the R8000, since it apparently never helps.

Did you follow steps 12 and onwards from shaithu's post?: https://forum.dd-wrt.com/phpBB2/viewtopic.php?p=1158306#1158306

Here's what I had written:

samus250 wrote:

I flashed the file in ./bin/targets/bcm53xx/generic/openwrt-bcm53xx-netgear-r8000-squashfs.chk using the regular Netgear Genie web interface. The router rebooted, so I ssh'hd into it:
Code:
$ ssh root@192.168.1.1


And connected it to my existing router (coincidentally, it's an R8000P), got an IP from it, and then tried:
Code:
$ ping 8.8.8.8


At this point, just like rwrjr noted, it would send 7 or 8 packets successfully, all with a few ms of RTT, but the 8th would take much, much longer. Then 7 packets would be sent in rapid succession and the 8th would take much longer and so on. I'm not sure if it was some kind of ip conflict or something, since both routers were using the same subnet with the same IP. I have no networking experience whatsoever so I'm just speculating, but I disregarded it and just connected it directly to my cable modem as rwrjr said. Although this isn't a fiber connection through an ONT, I had the same issue and rwrjr's solution worked flawlessly.

Then, as shaithus said:
Code:
$ opkg update
$ opkg install luci
$ /etc/init.d/uhttpd start
$ /etc/init.d/uhttpd enable


Accessed the web interface from 192.168.1.1, and uploaded the http://www.desipro.de/ddwrt/K3-AC-Arm/dd-wrt.K3_R8000.chk firmware.



openwrt-bcm53xx-netgear-r8000-squashfs.chk
 Description:

Download
 Filename:  openwrt-bcm53xx-netgear-r8000-squashfs.chk
 Filesize:  7 MB
 Downloaded:  282 Time(s)


openwrt-bcm53xx-netgear-r8000-squashfs.chk
 Description:

Download
 Filename:  openwrt-bcm53xx-netgear-r8000-squashfs.chk
 Filesize:  7 MB
 Downloaded:  304 Time(s)

THoffman
DD-WRT Novice


Joined: 25 Oct 2016
Posts: 13

PostPosted: Thu Apr 25, 2019 1:50    Post subject: Re: Helped with Netgear R8000 Reply with quote
Abboo wrote:
I must give thanks to Samus250 in get my brand new R8000 up and running. He was great and even though a novice like me did very little, I greatly appreciate what he has done and I will continue to learn from this forum.

Thanks Samus250


I have read thru this thread many times. If I am reading it right, I should be able to use your file (already patched) and pickup from step 12 without a TTL usb cable? I am making this assumption since you said you did not have one.

Thanks,

Todd
Abboo
DD-WRT Novice


Joined: 03 Apr 2016
Posts: 34

PostPosted: Thu Apr 25, 2019 15:43    Post subject: Reply with quote
Your assumption is correct. I do not take ownership of the file, it was supplied by Samus250, thanks to him again for saving all those who used his file and follow the instructions as supplied in this forum.
THoffman
DD-WRT Novice


Joined: 25 Oct 2016
Posts: 13

PostPosted: Sat Apr 27, 2019 1:46    Post subject: Reply with quote
Abboo wrote:
Your assumption is correct. I do not take ownership of the file, it was supplied by Samus250, thanks to him again for saving all those who used his file and follow the instructions as supplied in this forum.


Thank you for letting me know, Been trying to figure this out for days!

Todd
THoffman
DD-WRT Novice


Joined: 25 Oct 2016
Posts: 13

PostPosted: Sat Apr 27, 2019 4:13    Post subject: Reply with quote
Thank you willson556 for the patch, shaithus for the "how to", and Abboo for explaining it even further. I condensed it just a little further.

Know your router IP.

1. Started at step 12 as Abboo said. Don't bother reading above that.

2. Flashed openwrt-bcm53xx-netgear-r8000-squashfs.chk in DD-WRT.

3. Used OS X terminal:

$ ssh root@192.168.1.1

4. OS X terminal again.

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

5. Flashed dd-wrt.K3_R8000.chk

The only other thing I can add is if need to reset the router to defaults, the 30/30/30 reset did not work for me. Hold the reset with power applied for about 5 seconds until the top power light turns amber and let go.

Thanks,

Todd
emetz001
DD-WRT Novice


Joined: 13 May 2019
Posts: 1

PostPosted: Mon May 13, 2019 15:31    Post subject: Undesired Results Reply with quote
I followed the oulined instructions here meticulously but ended up with an undesired outcome. See attachment.

I now can neither SSH into the Router (R8000) nor access any functions within the admin panel.

Any help is appreciated. Again, I followed steps and even compiled my own files. Everything worked perfectly up to the very last step of expecting normal DD-WRT page. I have no idea how to make any changes or to retry uploading.

Thanks You.
egc
DD-WRT Guru


Joined: 18 Mar 2014
Posts: 3640
Location: Netherlands

PostPosted: Mon May 13, 2019 15:37    Post subject: Reply with quote
Try a different browser like Internet Explorer
_________________
Routers:Netgear R7800, Netgear R6400v1, Netgear R6400v2, Linksys EA6900 (XvortexCFE), Linksys E2000 (converted WRT320N), WRT54GS v1.
Install guide Linksys EA6900: http://www.dd-wrt.com/phpBB2/viewtopic.php?t=291230
Simple PBR (Policy Based Routing) script: https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=318662
Install guide R6400v2:http://forum.dd-wrt.com/phpBB2/viewtopic.php?t=316399
OpenVPN server setup guide:
https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=318795
Install guide R7800: https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=320614
dd-Nighty
DD-WRT Novice


Joined: 20 Aug 2016
Posts: 10

PostPosted: Fri May 24, 2019 21:54    Post subject: many thanks Reply with quote
Many thanks for this solved topic.

this just saved me from a couple more hours of troubleshooting.

- got 2 r8000 this week.
1 flashed flawless
1 kept complaining about incompatible firmware.

both came with the same factory firmware version installed.

oh well thanks again!
all fixed now.
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