Posted: Sun Mar 04, 2007 14:54 Post subject: WRT54G v5 bricked after restoring setting file
DD-WRT version: 2.3 SP3 date: 02 Mar 2007
After updating to 2.3 SP3 r6096, flashing function is broken (always failed.) and when I restore nvrambak.bin, it bricks. It flashs power led all the time.
How can I debrick it?
All methods except JTAG flashing were tried with no luck.
jtag would really fix that problem, no doubt:) probably you restored settings then before the router completely reboots (in a minute or two) you did a powercycle. anyways, just clear the nvram on that by jtag, most probably that is just what it takes to debrick it:D
you mentioned, you were using v23sp3 right? sp3 right now is on beta stage, meaning, there may or may not have some bugs for it. i would recommend the final releases, sp1 or sp2:)
good luck:D _________________ Chabert More T. Dangkulos
a.k.a. Ken Adams
*former Linksys Tech Support, Badge ID 27577
*former EarthLink LPV TRON(Level 3 Tech Support)
Technical Support Representative(US CableISP)
Convergys Philippines
Cebu Site
jtag would really fix that problem, no doubt:) probably you restored settings then before the router completely reboots (in a minute or two) you did a powercycle. anyways, just clear the nvram on that by jtag, most probably that is just what it takes to debrick it:D
you mentioned, you were using v23sp3 right? sp3 right now is on beta stage, meaning, there may or may not have some bugs for it. i would recommend the final releases, sp1 or sp2:)
good luck:D
Then I need to solder the JTAG headers on the board.
I got a question on making JTAG cable.
Is that OK not connecting Pin 1 and Pin 2?
yes you need to solder the jtag headers on the board.
i even soldered the wiress directly to the headers coz i couldnt find any jtag "plug or whatever"... got the headers from an old mobo:)
in making a jtag you gotta follow the hairydairymaid jtag schematics. pin 1 and p2 are connected...to the ground _________________ Chabert More T. Dangkulos
a.k.a. Ken Adams
*former Linksys Tech Support, Badge ID 27577
*former EarthLink LPV TRON(Level 3 Tech Support)
Technical Support Representative(US CableISP)
Convergys Philippines
Cebu Site
Pin 2 is ground......pin 1 is not used. If you connect pin 1 to ground, you'll have problems. I use both 2 and 6 for ground, and 3, 5, 7 and 9 for TDI, TDO, TMS and TCK respectively. Read the schematics again. _________________ Clear 4G Wimax.
Linksys WRT54G-TM w/14929 std-nokaid, fan-cooled, 2 GB SD mod, Primary Router.
Linksys WRT54G v.3 w/15230 std-nokaid, Client Bridge.
Linksys E2000 w/15200 "Big"
Linksys WRT54G v.4
La Fonera 2100, fan-cooled
Linksys WRT54G v.3.1
Linksys WRT54G v.1.1
Linksys WRT54GS v.1
2x Linksys WRT54G v.2.2
i used hairydairymaid's debrick software but got a little trouble understanding with the illustration on the pdf file. so i made some search and i found this >>>
a much more clear diagram for me on what pin/s on the jtag to the db25.
where it pin1 and pin2 on the jtag are ground on pins 18-25 of the db25...
i cleared the nvram and it worked. pin1 on the db25 however is not used. _________________ Chabert More T. Dangkulos
a.k.a. Ken Adams
*former Linksys Tech Support, Badge ID 27577
*former EarthLink LPV TRON(Level 3 Tech Support)
Technical Support Representative(US CableISP)
Convergys Philippines
Cebu Site
Pin 2 is ground......pin 1 is not used. If you connect pin 1 to ground, you'll have problems. I use both 2 and 6 for ground, and 3, 5, 7 and 9 for TDI, TDO, TMS and TCK respectively. Read the schematics again.
I want to connect JTAG pin 4,6 to pin 20, 25 of db-25 because I want to modify a old 25pin com port cable(9pin) with db25 female connector to JTAG cable.
Pin 2 is ground......pin 1 is not used. If you connect pin 1 to ground, you'll have problems. I use both 2 and 6 for ground, and 3, 5, 7 and 9 for TDI, TDO, TMS and TCK respectively. Read the schematics again.
I want to connect JTAG pin 4,6 to pin 20, 25 of db-25 because I want to modify a old 25pin com port cable(9pin) with db25 female connector to JTAG cable.
Huh?? Sounds like the long way around the door to get in the barn. I sell high quality cables with software, utilities and INSTRUCTIONS for $10 plus shipping. Just a thought. _________________ Clear 4G Wimax.
Linksys WRT54G-TM w/14929 std-nokaid, fan-cooled, 2 GB SD mod, Primary Router.
Linksys WRT54G v.3 w/15230 std-nokaid, Client Bridge.
Linksys E2000 w/15200 "Big"
Linksys WRT54G v.4
La Fonera 2100, fan-cooled
Linksys WRT54G v.3.1
Linksys WRT54G v.1.1
Linksys WRT54GS v.1
2x Linksys WRT54G v.2.2
Pin 2 is ground......pin 1 is not used. If you connect pin 1 to ground, you'll have problems. I use both 2 and 6 for ground, and 3, 5, 7 and 9 for TDI, TDO, TMS and TCK respectively. Read the schematics again.
I want to connect JTAG pin 4,6 to pin 20, 25 of db-25 because I want to modify a old 25pin com port cable(9pin) with db25 female connector to JTAG cable.
Huh?? Sounds like the long way around the door to get in the barn. I sell high quality cables with software, utilities and INSTRUCTIONS for $10 plus shipping. Just a thought.
I made the cable and I will solder the header later, hope it works.
BTW how can I flash other version of DD-WRT through JTAG? Thanks.
old school way works shorting the pins too for v5 andv 6 ... I believe the pins changed but it is somewhere in the neighborhood of pin 15&16......
Do this while wired to your router:
1. have linksys's tftp client ready to tftp a good known version of ddwrt... sp2 is fine. 192.168.1.1 is generally the address to use unless you had configured it otherwise before it bricked
2. go to run open up cmd and run a ping -n 192.168.1.1 with a static ip address configured on your desktop.
3. Short the pins. Once you get a response from router via ping send tftp.
I have only met one router out of hundreds that was bricked using this method and jtag didn't even pull that one out.
so, did you reflash the fw properly now?
up and running?
if it is... CONGRATULATIONS!!!
now you wont be afraid of bricking that thing again coz you already know how to debrick it:) _________________ Chabert More T. Dangkulos
a.k.a. Ken Adams
*former Linksys Tech Support, Badge ID 27577
*former EarthLink LPV TRON(Level 3 Tech Support)
Technical Support Representative(US CableISP)
Convergys Philippines
Cebu Site
so, did you reflash the fw properly now?
up and running?
if it is... CONGRATULATIONS!!!
now you wont be afraid of bricking that thing again coz you already know how to debrick it:)
Most of time spended on soldering cable and header.
I don't solder pin1-2 on the board so that my 10-pin connector can connect to JTAG.
I only use $0.3 for buying a header. My old modified 25-pin COM port cable works.
great! nice to hear it works for you:) there's no greater reward than being proud of yourself after doing something you thought you can never do:)
same way i feel the first time i made my jtag and revive my bricked wrt54g v5 _________________ Chabert More T. Dangkulos
a.k.a. Ken Adams
*former Linksys Tech Support, Badge ID 27577
*former EarthLink LPV TRON(Level 3 Tech Support)
Technical Support Representative(US CableISP)
Convergys Philippines
Cebu Site
great! nice to hear it works for you:) there's no greater reward than being proud of yourself after doing something you thought you can never do:)
same way i feel the first time i made my jtag and revive my bricked wrt54g v5
Yeah I think so.
By the way how can I download/upload files to the router? in SP2 and later there's no wget. I want to place kaid on /tmp of the router.
