Opus shuts down after being turned off to deep-sleep mode - FW 2.1
I usually turn off my Opus (firmware 2.1) to deep-sleep mode for instant reading after a reading session. An image appers on the screen as usual.
But when I pick it up for a new session several hours later, I find the device shut down, i.e. with a blank screen and the turned off icon in the upper-left corner. This happens even though the battery has plenty of charge.
I didn't use firmware 2.0 much because I upgraded to 2.1 soon after buying the Opus, but I don't seem to remember such a behavior in 2.0. Is this a bug or a feature? What am I doing wrong?
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