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3640 router flash upgrade problem [1:18928] posted 11/17/2007
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hi group,

I bought one 32(2*16MB) mb flash. 
 i cant upgrade the flash. i am trying using following methods: 

1) boot the router with a good flash image and then take that flash out and
insert the new flash. as 3640 take the ios image into DRAM and run from there.
 then using cpy tftp: flash: command

and it can't erase the flash.  at some point of erasing the router just
stuck. i got the following result:

Router#copy tftp: flash:                        
Address or name of remote host
Source filename
Destination filename
%Warning:There is a file already existing with this
Do you want to over write? [confirm]                                    
Erase flash: before copying? [confirm]                                      
Erasing the flash filesystem will remove all files! Continue?
Erasing device...
then i tried from rommon mode using xmodem command. but still i failed
because it says it cann't erase the flash.

Is there any other way that i can use to upgrade the flash.

any help will be highly appreciated.


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