Joined: 26 Jan 2008 Posts: 13049 Location: Behind The Reset Button
Posted: Wed Sep 02, 2009 16:27 Post subject:
In trying to figure out how and doing some research on regards to CFE commands at the cfe prompt.. I ran across this. Interesting.... I'll test at some point.
"You can use the CFE to flash a new TRX image without a serial console, simply by holding down the orange EZ-Setup button while powering on the device for about ten seconds. At that point CFE goes into "rescue mode"; it starts a TFTP server (on what default IP address?) and waits for a TRX image to be sent over the network." _________________ [Moderator Deleted]
"You can use the CFE to flash a new TRX image without a serial console, simply by holding down the orange EZ-Setup button while powering on the device for about ten seconds. At that point CFE goes into "rescue mode"; it starts a TFTP server (on what default IP address?) and waits for a TRX image to be sent over the network."
Which router uses trx? Asus?
There is a similar process for flashing my Ralink based GHR g300n. Start a tftp client on the computer and then use it to flash. There is information about this in the Ralink WHR-g300n install wiki. Might help. _________________ SIG:
I'm trying to teach you to fish, not give you a fish. If you just want a fish, wait for a fisherman who hands them out. I'm more of a fishing instructor.
LOM: "If you show that you have not bothered to read the forum announcements or to follow the advices in them then the level of help available for you will drop substantially, also known as Murrkf's law.."
Joined: 26 Jan 2008 Posts: 13049 Location: Behind The Reset Button
Posted: Wed Sep 02, 2009 18:32 Post subject:
Murrkf wrote:
barryware wrote:
"You can use the CFE to flash a new TRX image without a serial console, simply by holding down the orange EZ-Setup button while powering on the device for about ten seconds. At that point CFE goes into "rescue mode"; it starts a TFTP server (on what default IP address?) and waits for a TRX image to be sent over the network."
Which router uses trx? Asus?
There is a similar process for flashing my Ralink based GHR g300n. Start a tftp client on the computer and then use it to flash. There is information about this in the Ralink WHR-g300n install wiki. Might help.
Some linksys do also.. WAP54G V2 for instance. You can just rename bins to trx's and visa versa (I think). That is what you need to do to revert a wap.
Go to the ftp site.. I made a folder called "information library". I just put a pdf there in regards to broadcom cfe's and using the cfe prompt. it is an older document but most is still valid. _________________ [Moderator Deleted]
Joined: 26 Jan 2008 Posts: 13049 Location: Behind The Reset Button
Posted: Thu Sep 03, 2009 0:46 Post subject:
barryware wrote:
In trying to figure out how and doing some research on regards to CFE commands at the cfe prompt.. I ran across this. Interesting.... I'll test at some point.
"You can use the CFE to flash a new TRX image without a serial console, simply by holding down the orange EZ-Setup button while powering on the device for about ten seconds. At that point CFE goes into "rescue mode"; it starts a TFTP server (on what default IP address?) and waits for a TRX image to be sent over the network."
It didn't work on a GL.. I would expect that you must run an OEM cfe for this to work. A V5, V8, etc has the bsp replaced. A GL uses the stock linksys cfe.. Holding the ses button while powering on.. did nothing.
I post back with more worthless information as it becomes available.. _________________ [Moderator Deleted]
I found this on line about a serial flash of a ubiquiti bullet....looks like a kernel flash. Someone who knows more about linux might have to explain what is happening....
http://www.youtube.com/watch?v=m0pQaMyFPng&e _________________ SIG:
I'm trying to teach you to fish, not give you a fish. If you just want a fish, wait for a fisherman who hands them out. I'm more of a fishing instructor.
LOM: "If you show that you have not bothered to read the forum announcements or to follow the advices in them then the level of help available for you will drop substantially, also known as Murrkf's law.."
Joined: 26 Jan 2008 Posts: 13049 Location: Behind The Reset Button
Posted: Thu Feb 11, 2010 2:25 Post subject:
DHC_DarkShadow wrote:
So do we have any kinda of clear instructions? is it doable? Have you guys given up?
it was solved quite some time ago. It was another bricked 600 thread. I was using a gl that I could recover to test so the guy with the 600 didn't f$ck it up all together.
However since then, we have found a much easier way.
just bust into the boot if the router still wants to boot. then tell the cfe to listen for a tftp upload, then launch the tftp utility. _________________ [Moderator Deleted]
So do we have any kinda of clear instructions? is it doable? Have you guys given up?
it was solved quite some time ago. It was another bricked 600 thread. [snip]
just bust into the boot if the router still wants to boot. then tell the cfe to listen for a tftp upload, then launch the tftp utility.
OK, the first and third steps are easy. The first is ^C through the serial cable during power-up (timing is everything) and the last is self evident to anyone who has used tftp to flash. I think this step is less than clear:
"tell the cfe to listen for a tftp upload"
It seems like that info would be good in this thread, here and now. Can you help us find the relevant command within the 250+ posts answering a search on "another bricked 600"? Thanks.
I ask this because I have a router (USR5432) with corrupted nvram and/or corrupted linux, so it won't boot. At the very least I'll have to erase nvram over the serial console using the CFE, but then I'll probably need to manually set the vlan0 and vlan1 port numbers. Why? Because I already know that this CFE does not listen to the router's single ethernet port for a tftp upload by itself, since it thinks the port is for the WAN till the firmware boots and reconfigures it.
