Using SmartZone updated two stacks one stack was successful the other not.Updated from 08.0.90bT211 to 08.0.91T211 unit 2 was still up and unit 1 kept rebooting because of software not sync’ed over and over. Unit 1 was showing 08.0.91T211 Non-UFI and unit 2 was showing 08.0.91T211 UFI.Unconfigured stack on unit 1 and then manually load firmware then is showed UFI but kept rebooting because Unit 2 said it was out of sync.Disconnected Unit 1 from unit 2 manually uploaded firmware to unit 2 and reloaded. Stack was happy, is this normal?Ran 08.0.30 for 2 years no problems