Hello
Boot into rommon mode and either manually boot the old ios or delete the new ios, Once you have successfully done that then copy a new fresh ios on the switch and verify the it before booting to it.
1) Disconnect the switch from the stack
2) Attach console cable
3) Power up faulty switch and at the same time depressing the MODE button until STAT light goes out
4) Once in rommon mode type in sequence:
flash_init
load_helper
dir flash: <-----look for old ios
boot flash:xxxxxxxOLD-IOS.bin
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Kind Regards
Paul
