Prestigio PMP3970B_DUO, Техническое и сервисное руководство, Страница: 23 / 24

4. In power-off status (make sure the battery has enough capacity), connect the device to the PC
through a USB cable, then press and hold the VOL + button (for mono-core products) or VOL+ and
Power button together ( for dual-core products). Once the Device data appear on the interface, you
can click the Start button to start upgrading.
（
Here the Port x refers to the device connected to the
corresponding physical Port. In the case that certain port data is empty, it means that there is no
such correlated physical Port or no device connected to that Port.
）
5. When the burning progress comes up to 88%, it will be need some minuters for program.Please
wait.