『Beginning with nightly 20140501, several HTC devices are being transitioned to a new fstab layout. This will not affect your data. This change requires kernel support in recovery for CyanogenMod packages to install.』リカバリをCWM6.0.4.8-m7に入れ替えたらアップデートできた
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http://wiki.cyanogenmod.org/w/HTC_fstab_updates
How To Build CyanogenMod Android for HTC One (GSM) ("m7ul") - CyanogenMod
