[e-booklover]

After a long time I finally upgraded my Kobo Aura's (6inch version) 3.12 to the latest firmware version. But now I'm experiencing battery life issues. After banging my head against the wall screaming 'why did I upgrade' I now have a terrible headache, and a question:

Problem 1:
From all the firmware updates available, which has the best battery life? Should I go back to 3.12 or is there a better option? EDIT: Sync and Wi-Fi are off.

Problem 2:
The ereader is very laggy, from the menu's all the way to flipping pages and selecting stuff. There is like a 1-second delay and a fade-in/fade-out effect. My girlfriend's Aura (checking with the same version, same firmware, same book) is snappier. The funny thing is, she has about 40 books on the device, while I have only 2 (2Mb each).So mine is almost empty, yet way slower. Why is that? Our devices are around the same age, mine is from nov 2014 and hers dec 2014.

And a factory reset didn't solve my issues btw.