No slide lock in settings

Hi everyone. I want to enable slide unlock on my zte blade apex 2 but there is no slide option in the security settings. There are only None, Long Press, Pattern, PIN and Password. The rom is almost vanilla aosp kitkat. The green text and lollipop softkeys i got with gravitybox and xblast. So how can I get it can I like download some system app apk and install it with some root browser or something?

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Update Check, Settings app Crash

After the latest update, I believe its the 3 odd o4 4th on 5.1.1, When go through the usual Settings >> About Device >> Software Update, the settings app force closes with the message "Unfortunately Settings has stopped".

Now my questions are :

1) Will I still receive updates OTA (i.e. Marshmallow)?

2) Have a terminal app on my device, can I check for updates via that?

3) Can check for updates via ADB in Mac terminal?

4) Is it possible to force Smart Switch to check for update rather that have it as an automated check?

Sorry for all the questions.

Any/All help greatly appreciated

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Problem returning app to factory settings, please help

I recently updated my Google camera to the new marshmallow camera via an apk.
The new camera crashes when connecting to the video camera, so I figured I would just restore the app to factory settings in order to make it work again.
However, there is only the option to disable, not restore to factory setting under the app info.
So basically I'm stuck with this not functional camera app...
Can anybody help?

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