PocketBook Mini - Manual (Page 59)

Firmware Update
WARNING! Firmware Update is a responsible operation, during
which management software of the Device will be changed. In
case of improper execution control program may be damaged and
will require treatment in the service centre. Please perform the
upgrade procedure in accordance with the instructions below.
There are two ways to update the firmware.
Automatic Update
To start automatic software update select Settings > About
Device > Software > Software Update.
The Device will begin to check available update sources
in the following order:
• internal memory
• Internet.