PocketBook Touch Lux 2 - Manual (Page 86)

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. Slease 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:
• MicroSD card (if installed);
• internal memory;
• Internet.