I can not tell you why it could not been fixed until now. And I can not help you with this file.
Maybe flash an older version and update to 20161226 OTA or by local file.
blackview_admin wrote:I found a little workaround for this issue:
It seem to be a bug with summertime calculation in Android 7 for many devices with Mediatek Chipset. You can "solve" it by choosing an other timezone with the same offset but without summertime. For example if your setting is "Amsterdam GMT+02:00 Central European Summertime" you can change it to "Kairo GMT+02:00 East European Time". Caution: I guess with this setting your device may not change to wintertime automatic. So maybe you should wait with this workaround-setting until next years time change.