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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
After starting TFTP , I typed in cmd>tftp -i192.168.1.1. put C:\R8000-V1.0.44_1.0.96.chk firmware
I waited for the pop up you mentioned, but there was just nothing happening.
Can i check if the line i type is correct?
my R8000....chk file is placed in C:
You forgot to have a space ON -i 192.168.1.1. -i192.168.1.1. put C:\R8000-V1.0.44_1.0.96.chk firmware
Be sure that the firmware is the first version firmware from Netgear.
If you did all the procedure correctly you should observe the data led that is flsfhing with the data.
Re do the procedure and let us know.
peter11742
Hi peter11742
please see screenshot. Connect request failed.
any idea why this happens? am i misssing any steps?Hi All.
I am stuck on CFE after following all the steps in this thread, I have Putty connected, but getting the following error:
data cheksum validation failed. Any idea if possible to get CFE prompt?
The only solution that I can tell you is the following.
Take the power from all you devises off that means the router and your computer.
Now work on your router alone Make a procedure that resets the router by pressing the reset button and waiting 30 seconds.
Now you can start again with the putty and dos procedure. It should work because I had this problem and now the router works with the first firmware from NetGear. Good luck.
Peter11742
Thank you, Peter.
I have already tried that before. Reset is totally dead and not doing anything. I did power off/on, 30/30/30 reset, nothing seems to work on this router. Putty always brings same message when checking EEPROM.