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IOS downgrade issue

CSCO11638397
Beginner
Beginner

Hi,

Please explain me while I try to downgrade ios ver "c880data-universalk9-mz.151-4.M4.bin"  to "c880data-universalk9-mz.150-1.M.bin" giving error msg wrong ios image and going to rommon mode. is that possible to downgrade cisco 887 router?

8 Replies 8

CSCO11638397
Beginner
Beginner

any idea?

Peter Paluch
Hall of Fame Cisco Employee Hall of Fame Cisco Employee
Hall of Fame Cisco Employee

Mohamed,

I cannot say this with 100% certainty but usually, Cisco devices allow to downgrade their IOS. Please post the complete transcript of the failed boot attempt. Also add the output of the dir flash: command from the ROMMON. Thanks!

Best regards,

Peter

Leo Laohoo
VIP Community Legend VIP Community Legend
VIP Community Legend