@brucelee - is it possible that the new OTA builds would keep the device awake? After installing v0.0.6-16 on 626 FW4 I already found two times reader with 0% battery left. Also I have just tried OTA update and it cancelled with "server connection error" message. Now I'm back to my backup with one of the older builds (most probably v0.0.6-16-12 - I don't know how to check the version from app file) - will confirm after few hours if sleep bug still present or not.
Attached crash log.
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