Hi @jimmy_han,
Thank you for contacting Ruckus Technical Support Community.
We can upgrade the SZ directly from 3.6.2.0.250 --> 6.1.1.0.959
Refer https://support.ruckuswireless.com/documents/4376-smartzone-6-1-1-lt-ga-smartzone-upgrade-guide-sz10... for more info.
Prior to upgrade, please make sure we have the cluster and configuration backup downloaded to local PC.
Follow article https://support.ruckuswireless.com/articles/000006239 to extract cluster backup from SZ using FTP.
6.1.1.0.959 firmware image file can be downloaded from https://support.ruckuswireless.com/software/3548-smartzone-6-1-1-lt-ga-software-release-sz-100-ximg-...
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Regards,
Vasanth Edward || Snr TSE
RUCKUS Commscope
