PRESTIGIO PSP3455DUO ROM INSTALATION:

- Unpack ROM Prestigio-PSP3455DUO_official-ROM_20150303.1.0..zip

- Unpack Prestigio-PSP3455DUO_SP_Flash_Tool_v5.1408.00.rar and click on Flash_tool.exe

- Delete file

Checksum.ini

from ROM directory

- Select the

MT6582_Android_scatter.txt

in ROM directory

- Wait file to be added into Flash Tool

- choose

Option

->

USB

, click

USB

Speed

, click

High

Speed

- Turn off your phone, remove the battery.

- "Press F9 (hit Download button)" OR " if upgrade ROM Firmware->Upgrade "

- and connect your phone into the computer via USB data cable.

- The process will start and a red progress bar will appear after color purple, yellow.

- And green circles display

- Finish !

- You can now safely disconnect your phone and turn it on.