L02D PRADA LG unlock done in octopus [REFERENCE]...
tools: octopusbox/modified cable

steps:
1. Remove SD and SIM cards form phone;
2. Install necessary drivers;
3. Power phone ON
4. Select "Modem" connection mode;
5. Press "Connect" button;
6. Connect phone with P990 cable directly to motherboard USB port;
7. Type 3845#*02#;
8. Go to "Port Setting", select "CP Image download" and click "OK".

testing...

steps:
1. Remove SD and SIM cards form phone;
2. Install necessary drivers;
3. Power phone ON
4. Select "Modem" connection mode;
5. Press "Connect" button;
6. Connect phone with P990 cable directly to motherboard USB port;
7. Type 3845#*02#;
8. Go to "Port Setting", select "CP Image download" and click "OK".

testing...