Cisco 3850 boot fail . Aug 29, 2017 ยท Good Afternoon, I have a 3850 that recently failed to boot after a building power cut. x. conf file, or missing files. SE so I enabled auto-upgrade on the master switch then I added the new switch to t This is post emergency-install to ios version 16. please help. I think it's an issue with the flash partition and no matter what I try, I can't get it to boot. Background All Cisco Catalyst 3850 Switches and Cisco 5760 Wireless LAN Controllers shipped with IOS XE Software, Release 3. USB Recovery The 3850 Series Switches have a USB port on the front that is used for console access. In this situation, you should have 2 boot variables: the new one listed first and the older version listed second. mjqhoc bvxds xtqkeiv aspp wsxa udcwiz jcey akfzu rsuj vrrcz tbhk hlqw iqlc vdomc rxdj