I followed the steps but charged it in my computer for the night. Now I switched it back on and it says low battery.
Maybe my computer didn't charge it.
Do you think it's okay that I turned it on? Have I damaged anything?
I am thinking of charging it with the wall charger overnight and only then switch it back on. Do you think it will solve the problem?
Or should I undo the root, fully charge it and then root again and delete the battery file?