Now you can developer unlock any windows phone 8 / 8.1 devices and can install cracked xap apps and games.
I updated my L720 with 8.1 dev preview.
Using windows 8 on my pc
1. I used the old chinese software (version 4.3)
2. I installed it.
3. Disable PC from internet. Run it, it will ask for update. then choose NOT.
4. Disable phone from internet, connect it.
5. After it show the blue button, I reconnect BOTH to the internet network
6. Click the blue button
7. Wait for a while
8. I got an…