I too received the 184.108.40.20600 update. (Totally different UI etc) The 1.0.01.20 looks like the old 1.0.01.18 with a couple minor minor changes (per release notes) You will lose settings going to the .20 version (at least i did) A cisco support agent said i should roll back to factory settings, and then upgrade to the 1.0.01.20 version. Upgrading version numbers seems to keep settings, but downgrading version numbers does not.
Hope this helps
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