Nokia 501 unlock


I have been trying to upload Nokia 501 for unlock and it keeps giving error sign. Below is the log:

Phone found!
Series 40 Device detected!
read info… – Ok

Upload Job procedure started…

Phone Imei: 35552305271xxxx
Checking locks…
Conf key : 8000000000000000
Provider key : 2280100000000000
Country : Switzerland
Operator : Swisscom
Counters : Key 0 [3] , Fbus 0 [10]
Blocks : 1

LOCK STATUS :
=============================
BLK : 1
Lock1:Close
=============================
LOCKS : Closed
=============================
PA_SL30 (20 digit) phone detected…
Upload Job fail…!

What is the solution please Infinity Team?