LG S310 Unlock Done Via READ CODES.....[Reference]
Open Octopus Box
Select Model & Com Port
Cable (LG Micro Uart)
Power On The Phone
Connect Cable
Then Click Read Codes
Wait Until Show The Codes
Locked

switch on the phone w/ any sim & type 2945#*310#
it show press unlock, just click and enter SPCK code twice and click ok
reboot your phone and the phone now is unlock.
just follow the steps

Finished Product

Open Octopus Box
Select Model & Com Port
Cable (LG Micro Uart)
Power On The Phone
Connect Cable
Then Click Read Codes
Wait Until Show The Codes
Locked

switch on the phone w/ any sim & type 2945#*310#
it show press unlock, just click and enter SPCK code twice and click ok
reboot your phone and the phone now is unlock.
just follow the steps

Finished Product
