Netgear r8500

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MrBabs
DD-WRT Novice


Joined: 26 Jun 2017
Posts: 6

PostPosted: Sat Jul 22, 2017 0:24    Post subject: Reply with quote
mwnn wrote:
Malachi wrote:
Don't do it. I bought 3. One was beyond repair. No matter what build I tried, dd-wr or netgear none of them fully work.
One wouldn't run anything. 2 of them only work with dd-wrt but not all bands.
On one the lower 5ghz band is missing, on the other the upper band 5ghz is missing.
I have the one with the missing lower 5ghz running kongs build and I use it as a dual band router.
All of them required serial flashing.

I only hope you didn't pay a lot for them Malachi.

Well, unless you're an eccentric millionaire? Or perhaps some strange kind of router masochist? Twisted Evil



Don't worry I wouldn't touch the R8500 with an extremely long bargepole Wink


MODEL: 8500 MP2
Made in: Vietnam


Ok I just did it, bought one on Ebay. Crying or Very sad
The description stated that it had one broken antenna so was an AS IS, BUT when I turned it on... bricked... bootloop and amber led.

Got a serial cable and manage to get in cfe.
When I run:
"nvram erase"
result:
"0"
I can launch tftp, and send a firmware to the router using "tftp -i 192.168.1.1 put C:\r8500.chk" (renamed the files to r8500)
I tried a few different ones... with no good luck.
Gonna attach most recent serial logs trying to flash the latest Netgear stock firmware (1.0.2.100) and the latest KONG (21-07-2017).

Really hopping that I´m doing something wrong. Since I´m new at this stuff.
Also measured the input voltage on the board and did not find any drops during the processes.

Should I open a new tread or it is ok here?



putty200708.txt
 Description:
kongflash

Download
 Filename:  putty200708.txt
 Filesize:  23.42 KB
 Downloaded:  435 Time(s)


putty193147.txt
 Description:
Erase nvram

Download
 Filename:  putty193147.txt
 Filesize:  105.94 KB
 Downloaded:  456 Time(s)

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Malachi
DD-WRT Guru


Joined: 17 Jul 2012
Posts: 7231
Location: Columbus, Ohio

PostPosted: Sat Jul 22, 2017 0:57    Post subject: Reply with quote
I could never get the newer netgear firmware to flash. The most recent was the second release I believe.
I was able to load kongs factory to dd-wrt bd then his bin files for upgrading.
Stop the cfe, I use tfptd32. In the cfe just type: tftpd. The router will start looking for firmware, then upload it using tftpd32.
Even if you get it running, don't expect all radios to work.

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I am far from a guru, I'm barely a novice.
MrBabs
DD-WRT Novice


Joined: 26 Jun 2017
Posts: 6

PostPosted: Sat Jul 22, 2017 3:07    Post subject: Reply with quote
Sorry, but let me explain the problem better, correct me if I´m wrong please.

I did flash several different netgear and kongs dd-wrt firmwares. ( At least to files where successfully transfered)

I´m going to try to use the tftpd32.

What firmware do you recommend?
Do I flash the .chk file?
After that is the router supposed to boot or I need to flash the bin via tftp on the cfe also, to get it to boot?

....
Could I get a step by step of your procedure?
Malachi
DD-WRT Guru


Joined: 17 Jul 2012
Posts: 7231
Location: Columbus, Ohio

PostPosted: Sat Jul 22, 2017 11:09    Post subject: Reply with quote
Use the chk file the bin file is for use once it's already running dd-wrt. For future upgrades or downgrades.
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MrBabs
DD-WRT Novice


Joined: 26 Jun 2017
Posts: 6

PostPosted: Sat Jul 22, 2017 21:05    Post subject: Reply with quote
Yeah, that one I knew.
The thing is, the router flashes every firmware I throw in it, but does not boot at all... not stock firmware nor custom ones.

Could you take a look on those log I posted please?
See if I done any mistakes on the processes.
[/quote]
Malachi
DD-WRT Guru


Joined: 17 Jul 2012
Posts: 7231
Location: Columbus, Ohio

PostPosted: Sat Jul 22, 2017 22:18    Post subject: Reply with quote
I looked at them but I don't know anything about code. So it just sits there after flashing or does it reboot over and over?

Looks like a boot loop on netgear firmware.

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MrBabs
DD-WRT Novice


Joined: 26 Jun 2017
Posts: 6

PostPosted: Sat Jul 22, 2017 22:30    Post subject: Reply with quote
Yeah it does bootloops on the netgear firmware, and it gets stuck on Kong´s.
MrBabs
DD-WRT Novice


Joined: 26 Jun 2017
Posts: 6

PostPosted: Sat Jul 22, 2017 23:07    Post subject: Reply with quote
On netgear´s firmware it goes bootloop. (kernek panic)
On kongs it just freezes.
Malachi
DD-WRT Guru


Joined: 17 Jul 2012
Posts: 7231
Location: Columbus, Ohio

PostPosted: Sun Jul 23, 2017 0:20    Post subject: Reply with quote
Get another router.
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I am far from a guru, I'm barely a novice.
realbbb
DD-WRT Novice


Joined: 25 May 2014
Posts: 36

PostPosted: Mon Jul 24, 2017 23:21    Post subject: Reply with quote
Malachi wrote:
Get another router.


Only fix to the manufacturing defect is to do as Malachi said.


BBB
Red Sleep

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Asus RT-AC5300, Netgear R8500, Netgear R8000, Netgear R6100, Linksys E2500, Linksys E2000, Netgear R7000, Netgear WNDR4500, Netgear WNDR3800, Linksys WRT54Gv4, Linksys WRT54Gv1.1
RobrPatty
DD-WRT Novice


Joined: 06 Jun 2016
Posts: 22

PostPosted: Fri Sep 22, 2017 16:14    Post subject: 33375 Reply with quote
flashed with 33375 and everything worked great accept radios
signals were inferior. ethernet speeds were amazing but wireless horrible. Is there any setting I can make to increase radio signals?
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