Cisco 1720 problema

[nicolac]

Salve a tutti e complimenti per il forum.
Vorrei chiedere se vi e mai capitato che dopo un aggiornamento del Cisco IOS di un 1721 vi da il seguente errore:

System Bootstrap, Version 12.2(7r)XM1, RELEASE SOFTWARE (fc1)
TAC Support: http://www.cisco.com/tac
Copyright (c) 2001 by cisco Systems, Inc.
C1700 platform with 32768 Kbytes of main memory

program load complete, entry point: 0x80008000, size: 0xac62ac
Self decompressing the image : ################################################################################################################################################################################# [OK]

*** Machine Check Exception ***
PC = 0x811f69bc, Vector = 0x200, SP = 0x8000646c

monitor: command "boot" aborted due to exception
ý
System Bootstrap, Version 12.2(7r)XM1, RELEASE SOFTWARE (fc1)
TAC Support: http://www.cisco.com/tac
Copyright (c) 2001 by cisco Systems, Inc.

In pratica dopo la parte i grossetto riparte di continuo con questo errore.
Si è guastato o devo rifare la procedura di upgrade? e se si come posso fare?

Saluti e grazie
Nicola