Factory reset was supposed to happen before flashing the update.
Some ways that could work:
1) I don't know if the pro+ has a better recovery menü than the pro. You can try it after switching the device off (loooongpress power) and starting it while refresh button and power button are pressed.
2) If you have root you could use adb (adb shell
recovery --wipe_data). More help at
this thread .
3) Downgrade to version 1 again (
ROM at this site. Factory reset upgrade v.2.
Edit: Factory reset while pressing power button and reset button: I don't know but its worth a try. You need to switch off the device with a very long press of the power button and then probably holding both buttons till the factory reset is starting.
Edit2:
Found 2 ways to reset in the energy forum, please inform which helped:
1) To reset, pressing into the small hole next to the micro USB connector while holding down the screen refresh button, top left button ....
expect an image of an Android robot lying with an exclamation ... then back to reset by pressing only the hidden next to the micro USB button appears (I recommend using a clip, gently of course)
2) I've gotten the doll lying, by simultaneously pressing the following buttons appear:
Screen Refresh button,
page turn key back right side (That is, top of the key long pass right-hand page) and
Home key (the key boot device).
Once the doll, reset with a clip appears.
3) Those instruction seem a little confusing. My 2cents. You come to the lying doll by pressing the refresh button and the power button to start. If the lying robot appears gently press the reset button with a clip.
Please keep us informed what helped.