[Andromed]

I have an unusual problem with my Kindle Paperwhite V2. Two years ago I damaged my display slightly, a little break in the top right corner makes it impossible to access the menu. All other functions work perfectly, so I can read, adjust the light, load books via USB etc.
Thankfully the kindle was in flight mode at the time of the accident, and since I don't need the wireless connection, I was happily reading along for two years.

Yesterday happened what I was fearing all the time: I accidentially turned flight mode off by answering one of these questions popping up. Now my battery life is dramatically reduced and I would love to get back into flight mode.

My question: is there any trick, any hidden menu or way to turn on flight mode again, without beeing able to access the kindle menu by means of the button in the top right corner of the screen?

Any ideas would be greatly appreciated