1) Power up Cat4506E as normal
2) (ip add management int vlan1) Use tftp method to copy the image into bootflash:
3) Issue command config-register 0x2102 (the switch default register is 0x2101, it means the switch will always auto-boot from 1st available file inside bootflash: which is normally the old image)
(define which image that you want to boot it from)
4) Issue command boot system flash bootflash:cat4500-entservices-mz.122-46.SG.bin
5) Save config and reload switch; make sure the switch is able to boot with the new image (show version)
6) Issue command config-register 0x2101
7) Delete old image from bootflash: (delete bootflash:
8) Free up space for bootflash: (squeeze bootflash: )
9) Issue command no boot system flash bootflash:cat4500-entservices-mz.122-46.SG.bin
10) Save config and reload again
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