s550tl unlock problem

Using Version...1.0.0.0061
Selected Port SAMSUNG Mobile USB Modem #95 COM203
Selected Model GT-I5500
Selected Task SAMSUNG Exynos Unlock

SAMSUNG Exynos Unlock started...
Searching phone...

Phone Found Please Wait...
Model := S550TL
Ver := S550TLUDU1APG1/S550TLTFN1APG1/S550TLUDU1APG1/S550TLUDU1APG
SN := RV8H90WSSN
IMEI := 35957807110761
UNIQID := CQN00135CDA937
Unsupported Device fail to answer nv details..
Unsupported Device..

!!! Fail !!!!
Total Time Take...00:00:14
Log Saved