yes... unlocking your db2020 cid 52... is now free...
using your cruiser box...via usb cable...
CID 52 patch unlocking
1. For unlocking you can use only DCU-60 cable.
2. Download latest firmware for your phone (ARM and FS file).
Open USB cable window in Cruiser.
3. In Primary tab -> Attach phone.
4. Flash -> Write raw FS
5. Security RSA -> Unlock RSA
6. Flash -> Flash ARM
7. Locks -> Direct unlock
8. Flash -> Select language pack and firmware version matching FS flash file
9. Customize FS
10. Main tab -> Turn off phone

CRUISER BOX Users:How To Upgrade CID 49,50,51 To CID52 :
Be sure to upgrade the EROM before performing this conversion!
· Attach the phone normally, then go to the GDFS tab,
· from the Modify GDFS options list choose Upgrade to CID52 and press the Modify GDFS button.
· Then turn the phone off (for example by pressing the Finalize GDFS button).
The CID will be upgraded during the next EROM code execution, i.e. during phone startup or boot via DCU-60 (while holding the C key).