Hey guys ... so I'm trying to upgrade an old 4 member stack of 3850's to add a new member.
The stack IOS images are oooooooooold: 03.02.01.SE.
The new switch came loaded with 16.03.06.
So i copied the most current over to the stack, and ran the software install command.
Everything looked good until they reloaded, and they were all stuck in a loop.
I had no other choice but to go into ROMMON and set the boot parameter to the rollback file "packages.conf.00-"
This brought them all back up into the previous (working) IOS image.
I've been doing quite a bit of reading and luckily/unluckily I'm not the only one who has this issue.
I can't find any documentation on an upgerade path, but I'm wondering if I just cycle through a few upgrades if I can eventually get these things to cooperate.
Does anyone else have experience with this nonsense?
Sorry if I'm not providing enough info, this is my first upgrade failure and it's wearing me out.
I don't want to wipe the flash because the IOS version running is not even available for download, so I can't get the .bin to recover if I need it.
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