Netgear r8500

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dagreek
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Joined: 23 Nov 2016
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PostPosted: Wed Nov 23, 2016 1:26    Post subject: Netgear r8500 Reply with quote
I have tried to upload the .chk firmware from kong. The latest one and it says that the firmware is not compatable from my router. Just yesterday I flashed my other r8000 router with kongs build with no problem.

I have done a 30/30/30 reset. Tested on the original firmware when I received my device and the latest firmware from netgear. Any suggestions?
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<Kong>
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PostPosted: Wed Nov 23, 2016 6:44    Post subject: Re: Netgear r8500 Reply with quote
dagreek wrote:
I have tried to upload the .chk firmware from kong. The latest one and it says that the firmware is not compatable from my router. Just yesterday I flashed my other r8000 router with kongs build with no problem.

I have done a 30/30/30 reset. Tested on the original firmware when I received my device and the latest firmware from netgear. Any suggestions?


This is simple the id of the R8500 does not match the one in the build, which means either some new variant or corrupt flash.

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ddaniel51
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PostPosted: Wed Nov 23, 2016 10:08    Post subject: Reply with quote
What is the name of the file you tried to flash on the R8500?
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dagreek
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PostPosted: Wed Nov 23, 2016 12:50    Post subject: Reply with quote
Actually just tried to downgrade to the first firmware version for r8500 and it says thats invalid as well.

I tried both kongs version and later handyones. Both didn't work.

As for kongs that I tried dd-wrt.K3_R8500.chk

I'm returning the r8500.
ddaggett1
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PostPosted: Fri Nov 25, 2016 23:55    Post subject: Netgear R8500 from BestBuy BlackFriday Sale Reply with quote
I just purchased one of these, and I think I'm having the same issue as at least one other person on the board. I tried to upload the most recent, and an older, .chk file to start the move of the R8500 to DD-WRT, but I got the error message from the Netgear firmware that the firmware is not compatible with the router. Error Code -2. The router otherwise appears to work, and it was able to upgrade to the most recent Netgear firmware. But, interestingly, it would not downgrade to an earlier firmware for the R8500. Any suggestions on how to get DD-WRT on this? I'm assuming this means that this is a new variant build of the R8500. I can provide information if you can tell me what to look for and how to get it to you. Thanks!
extension23
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PostPosted: Sat Nov 26, 2016 11:47    Post subject: Reply with quote
I am running into the same issue (although I am able to downgrade to at least one older version of the Netgear firmware without a problem.) I have tried the r8500 chk files going back several months and they all give the error. I also tried the ones on the myopenrouter.com site as well with the same results.

I wonder if we are dealing with a new revision to the model. I can't really find a number on mine that tells which revision it is unless it is this one on the sticker on the bottom under made in Vietnam:

272-12473-02

I am open to trying any suggestions anyone has.
stalonge
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PostPosted: Sat Nov 26, 2016 15:11    Post subject: Reply with quote
i bought my r8500 in april .. since there .. its working with kong builds , and i flashed it several times ... Until builds prior then 30300 i had some problems but now it works flawless for days ... I am not using 30880 ... i am using 30870 its rock solid with my settings ..



Very Happy Very Happy

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dagreek
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PostPosted: Sat Nov 26, 2016 18:45    Post subject: Reply with quote
Ddaggett1 that's the same error code I get. Not sure what the issue is but it looks like we have the same one.
labo
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PostPosted: Wed Nov 30, 2016 3:42    Post subject: Reply with quote
I bought mine a week ago from Newegg and it is manufactured in China with numbers: 272-12473-02
No issues with latest Kong's build: R30880
extension23
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PostPosted: Thu Dec 01, 2016 10:50    Post subject: Reply with quote
Quote:
I bought mine a week ago from Newegg and it is manufactured in China with numbers: 272-12473-02
No issues with latest Kong's build: R30880


When you say Kong's latest build... is that the one from this site http://desipro.de/ddwrt/K3-AC-Arm/ with a date of 11/15/2016?

I get the same error with that one two. I wonder if there is something different between the manufacturing of the models in Vietnam and China
Alozaros
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PostPosted: Thu Dec 01, 2016 12:40    Post subject: Reply with quote
well in that context anyone tried BS builds ??
ftp://ftp.dd-wrt.com/betas/2016/11-14-2016-r30880/netgear-r8500/

may be his builds will work on R8500 or at least try BS factory image, and then move to either Kong build or BS !!!

If that way doesn't work too.. so it's router related hardware/firmware issue!!

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labo
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PostPosted: Thu Dec 01, 2016 18:45    Post subject: Reply with quote
I directly updated from factory firmware to Kong's build: 30880M - 2016/11/14
File: dd-wrt.K3_R8500.chk

No issues at all. uptime 7days and counting.
<Kong>
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PostPosted: Thu Dec 01, 2016 22:57    Post subject: Reply with quote
extension23 wrote:
I am running into the same issue (although I am able to downgrade to at least one older version of the Netgear firmware without a problem.) I have tried the r8500 chk files going back several months and they all give the error. I also tried the ones on the myopenrouter.com site as well with the same results.

I wonder if we are dealing with a new revision to the model. I can't really find a number on mine that tells which revision it is unless it is this one on the sticker on the bottom under made in Vietnam:

272-12473-02

I am open to trying any suggestions anyone has.


Get a usb ttl adapter attach it and show me the output when flashing.

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extension23
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PostPosted: Fri Dec 02, 2016 11:38    Post subject: Reply with quote
Quote:
Get a usb ttl adapter attach it and show me the output when flashing.


I didn't immediately understand this but after some google searching I think I understand what you are asking for. I found this link which seems to be a nice walk through of connecting (albeit for a different Netgear router) and using the usb-ttl adapter.

http://midnightme.com/2015/03/16/how-to-unbrick-or-fix-a-netgear-ac1450-router/

I assume the pins may be different on the R8500 so I'll need to figure those out. I had to order a usb-ttl cable so it may be a few days before I can provide the update.
labo
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PostPosted: Fri Dec 02, 2016 19:02    Post subject: Reply with quote
R8500 serial port.


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