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R8500 bricked
Hi All. This is my first report. I purchased on purpose the above router on Ebay. I can not register it Serial 4DG65B7G019C5 it is used like mint. The reason i found it is the best range router an...
This is my final procedure after I fixed the second router r8500.
1) J4 connector pins : 1 2 3 4 pins are visable by looking the motherboard and they are located in the front view.
and j4 mark is located next to #1 pin. 1 gets green color, 2 gets white color, 3 gets green color, 4 is not connected.
2) open the bottom cover by removing the 6 tork screws.
Take the cover half way out so you can see the j4 plug and plug the serial cable.Turn on the router.
3) Start Putty let it run for a minite or so and start sending control c commands until you will see CFE.
4) on CFE type nvram erase you will see a 0 as an answer.
5) On CFE type tftpd you will get tftpd server ready ::
6) go on comand mode dos cmd>tfttp -i 192.168.1.1 put C:\r85.chk
r85.chk will be your old firmware located on the c:\ main directory
7) Now you will see a blue led on the #1 port flickering comminicating.
8) if what you did is correct then you will get from dos and putty file tranfered successful.
9) Now hold the reset button with a pin and turn the power off.
10) with the pin on reset turn power on and waight for 3 reboots let the pin go.
11) waight for 2 minutes you will see many led's comunicating and final the main led will be normal.
12) The router is now ready to be configuerd.
13) The network name and password is located on the white paper top right or at the bottom of the router.
I did 2 units the first one it took 1 week the second one it .5 hour.
Good luck.
peter11742
Hello,
I am trying to fix my brothers netgear router. He bought it on Ebay from an unscrupulous seller. It is stuck in the boot loop, power light changes between amber and white. I have been trying to follow the suggestions posted in this thread, but I have a problem. I set the LAN Ip address to 192.168.1.10 and the gateway to 192.168.1.1
Using a USB to TTL adapter, with control c, I can get the CFE. I did nvram erase, and get "command status = 0" . When I type tftpd I get "Start TFTP Server" and on the line below I get "Reading : :" . Your posts said I should get a message saying ready. I tried using a dos command CMD>tftp -i 192.168.1.1 put C:\r8500.chk . When I hit enter the dos cursor drops down 1 line and just flashes. There is no command prompt or message, just a flashing cursor. I have tried leaving it like that for an hour with no change. When I look at PuTTY, there is the same message "reading : :" , with a green cursor. I am connected by the USB to TTL (green-white-black), and from my ethernet on computer to the LAN 6 on the router. In PuTTY, i have set serial, 115200 speed, and com3. I have tried slower speeds, but get garbled text. I have also tried changing ports on the router, but nothing changes. If You know what I'm doing wrong, Please Help. Thanks, Doug
Hi.
Before you try to fix the unit try the 30/30/30 reset.
Then try the procedure.
You should get from both dos and putty "file transfered."
Are you using win 10 ?. if not try to use it.
Good luck.
peter11742
Hello,
Thank you for the response. I am new to the site, and might not be using the right procedures for posting. If so, I apologize. I have tried the 30/30/30 reboot, and I get the same thing. I run Putty and get the CFE prompt. I type tftpd and get the message "reading : :", should it say ready? I run the dos command and the dos cursor drops to the beginning of the next line and flashes. No message or prompt. The PuTTY screen does not change. I have tried to leave it like that for several hours , and nothing changes.
In working with this I have noticed a couple of things that might help, if you know what they indicate.1. When I am running PuTTY and press the reset button, it does not interupt the boot cycles. Shouldn't it do the same as power off, and restart the cycle? Is it possible that the reset button is not working?
2. After I do nvram erase, and tftpt in PuTTY, I tried using tftp2 to transfer. It starts uploading gets about 2/3 of the progress bar, and then retries. and repeats the same 2/3 of the upload.
I really appreciate an help you can give me. Thanks, DougHi.
Putty should respond after reading. "TFTPD server ready."
You do not get the above, putty is not functioning.
Only after tftpd server ready you go to the dos program and finish it's commands
Good luck.
peter11742