Auto switch between connected and charging mode without fysically removing USB cable
If the Kobo is connected to the computer using a USB cable, there are two options.
1. charging mode by pressing the cancel button (device is fully accessable)
2. connect to computer to transfer books (device becomes a mass storage device)
When you select option two to transfer books and when your're done choose to safely remove usb hardware devices by pressing the appropriate button in the OS taskbar or Kobo desktop software the device doesn't switch from connected mode (option 2, mentioned here above) to charging mode (option 1). Unfortunate, to gain normal access to the device you'll have to fysically remove the usb cable.
Adapt the firmware to switch between charging and connection mode if the option "safely remove usb hardware devices" is chosen, without fysically removing the usb cable.
This also improves the rendering speed of the several cover images sizes for the home screen, library, book details etc.
Especially when you load quite alot of books at once.