Thanks for the info, however I wish to downgrade my IOS from 156-2T to 155-3.M4a.Perhaps doing only the IOS downgrade, and not the whole bundle downgrade would solve my issue, but I am really worried about why a downgrade causes my router to go into ...
Hi Steve,On the article you mentioned:
Please notify, the 15.6 or later can be upgraded from 15.5.3 only. All the other version such as 15.5.2 or earlier must be upgrated to 15.5.5 first, and then upgraded to 15.6 or later.
Why is this not possible? ...