Bricked or Broken Bootloader - How to Fix

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zzzBrett
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Joined: 19 Jan 2009
Posts: 6

PostPosted: Fri May 21, 2010 21:31    Post subject: Bricked or Broken Bootloader - How to Fix Reply with quote
Hello,

So a while back, I managed to mess up my wrt-54g v5 router with a firmware flash (don't remember exactly what I did, it was months ago). I'm now back trying to fix it. According to the wiki, it looks like it may have a bad bootloader because the power LED flashes for longer than two minutes.

I was able to get into the linksys management mode and attempted to upload the current linksys firmware, it said flash successful, but still had the same problem. I also dried the recommended dd-wrt firmware but the upgrade failed.

I assume flashing does not fix the bootloader? ..not sure. Anyways, how would I go about fixing this unit? I managed to create a bootloader using the tool suggested in the wiki but can't access the router using telnet or ssh, so not sure how to get it on there.

Any suggestions?
Thanks
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PostPosted: Fri May 21, 2010 23:58    Post subject: Reply with quote
Peacock, note 6.
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zzzBrett
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Joined: 19 Jan 2009
Posts: 6

PostPosted: Sat May 22, 2010 0:08    Post subject: Reply with quote
Read that, can ping fine at management mode screen but no other time.
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PostPosted: Sat May 22, 2010 1:40    Post subject: Reply with quote
"Ping fine" doesn't really tell much, and isn't what you are asked to post from note 6.

See the jtag wiki.

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THESE:
http://www.dd-wrt.com/phpBB2/viewtopic.php?t=54889
http://www.dd-wrt.com/phpBB2/viewtopic.php?t=51486
http://www.dd-wrt.com/phpBB2/viewtopic.php?t=54845
http://www.dd-wrt.com/phpBB2/viewtopic.php?t=52043
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LOM
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Joined: 28 Dec 2008
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PostPosted: Sat May 22, 2010 3:17    Post subject: Reply with quote
There is nothing wrong with your boot loader if management mode screen appears.
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crashfly
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Joined: 24 Feb 2009
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PostPosted: Sat May 22, 2010 4:28    Post subject: Reply with quote
LOM wrote:
There is nothing wrong with your boot loader if management mode screen appears.

I agree with LOM on this one. If you can get the management screen, then your router knows enough to get that far. It would seem that you might not be waiting enough for the router to finish reconfiguring itself, or you might even trying to load a corrupted firmware. You might even need to be loading the alternate wireless driver instead of what you are using. (Possibly VINT instead of NEWD.)

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zzzBrett
DD-WRT Novice


Joined: 19 Jan 2009
Posts: 6

PostPosted: Sat May 22, 2010 4:41    Post subject: Reply with quote
crashfly wrote:
LOM wrote:
There is nothing wrong with your boot loader if management mode screen appears.

I agree with LOM on this one. If you can get the management screen, then your router knows enough to get that far. It would seem that you might not be waiting enough for the router to finish reconfiguring itself, or you might even trying to load a corrupted firmware. You might even need to be loading the alternate wireless driver instead of what you are using. (Possibly VINT instead of NEWD.)


I don't know what VINT and NEWD are, but I got the firmware directly from the linksys website after selecting the corresponding model router. It wouldn't be a problem going back to a linksys firmware after attempting to flash with dd-wrt, would it?
LOM
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Joined: 28 Dec 2008
Posts: 7161

PostPosted: Sat May 22, 2010 6:00    Post subject: Reply with quote
zzzBrett wrote:


I don't know what VINT and NEWD are, but I got the firmware directly from the linksys website after selecting the corresponding model router. It wouldn't be a problem going back to a linksys firmware after attempting to flash with dd-wrt, would it?


Yes there would, dd-wrt is running linux and the original firmware is running vxworks operating system.

Go to the dd-wrt wiki and check out your models flashing instruction to see if there is a revert for it.

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PostPosted: Sat May 22, 2010 13:49    Post subject: Reply with quote
zzzBrett wrote:
I don't know what VINT and NEWD are,


You would know if you followed the advice in my sig...

Do it.

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If I've said it once, I've must have said it a thousand times! READ the announcements at the start of the broadcom forum!
THESE:
http://www.dd-wrt.com/phpBB2/viewtopic.php?t=54889
http://www.dd-wrt.com/phpBB2/viewtopic.php?t=51486
http://www.dd-wrt.com/phpBB2/viewtopic.php?t=54845
http://www.dd-wrt.com/phpBB2/viewtopic.php?t=52043
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