Cisco Valet Plus M20 by Teddy Boom.

This is to recognize people who had donate their device for testing.
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usbbdm
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Joined: Mon Jul 18, 2005 9:33 pm

Cisco Valet Plus M20 by Teddy Boom.

Post by usbbdm »

usbbdm
Junior Member
Posts: 8962
Joined: Mon Jul 18, 2005 9:33 pm

Post by usbbdm »

Download 0.60 to program this router.
CAPONE
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Post by CAPONE »

usbbdm wrote:Download 0.60 to program this router.
Does it have a JTAG Port or is it an SPI Flash?
"If you give a man a fish you feed him for a day. If you teach a man to fish you feed him for a lifetime."
Teddy Boom
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Post by Teddy Boom »

It has JTAG, but it is also 8 pin SPI flash.

I tried clipping to the SPI flash before contacting usbbdm about it, and I ended up bricking one. It had something to do with clicking ID multiple times quickly. Strange thing is, it appeared to erase the entire flash (that shouldn't be possible, right?). I really have no idea what happened..

Anyway, I desoldered the SPI flash and the USBJTAG was easily able to read and write the chip while out of circuit, so I was able to recover almost everything from the issue.

Great to see JTAG support.
usbbdm
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Post by usbbdm »

For SPI flash it is always better to use JTAG port if it is available. Far better than the SPI clip hack.
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