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Goals
After reading through this web page, you should be able to revive a 3290 by booting from the backup boot image and reloading the normal boot images. This procedure should also work on the Pronto 3780.
This document does not apply to the LB4G/Pronto 3240.
If you are able to boot to the u-boot prompt but are not able to load the flash image (with 'run flash_bootcmd') then you may be able to reload the flash files to the switch. See Reflashing a Pronto Switch for more information.
The Problem
The 3290 normally loads its boot image from the compact flash card. If this image has a problem and cannot boot, you need to load the back up image and copy a new image back to the compact flash. This requires using the serial port.
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