Connect powered-on phone to PC via KH4500 cable.
Install required driver.
Select firmware file.
Click "Write firmware" button.
Follow software instructions (prompts).

Connect powered-on phone to PC via KH4500 cable.
Install necessary driver.
Click "Unlock" button.
Follow software instructions (prompts).

Dagdag Ref: Only
Install required driver.
Select firmware file.
Click "Write firmware" button.
Follow software instructions (prompts).

Connect powered-on phone to PC via KH4500 cable.
Install necessary driver.
Click "Unlock" button.
Follow software instructions (prompts).

Dagdag Ref: Only