2720a-2b RM-520 v8.62 successfully convert to RM-520 v8.20 and unlocked by cyclone

2720a-2b RM-520 v8.62 successfully convert to RM-520 v8.20 and unlocked by cyclone with procedure...

1. Box: Cyclone Box with DCT4 plus activated

2: Cable: UFC Cable set to 5.1k

3. Flash phone using RM-519 v8.20 firmware to downgrade

= download the firmware at cyclone support site =

4. Write PM file

= download PM file = here

5. Unlock and repair BT if necessary

6. Do hardware modification


Here's the logs:


Phone unit:



Flashing:







Write PM:





Unlocking:



Pinout:



Hardware Modification:

= Make a jumper and follow the red line =



Finish Product:



Hope it helps... thanks...