A520W Jan Security not Unlocking in 30.9

Unlock4samsung Saturday, March 10, 2018

i am getting Below error while unlocking in new setup..
pls help.
i tried to downgrade modem but after writing modem its imei goes null.

Quote:

[ 10-03-2018 12:21:00 PM ] Operation: Read Codes via Server
[ 10-03-2018 12:21:00 PM ] Selected model: SM-A520W
[ 10-03-2018 12:21:00 PM ] Software version: 30.9
[ 10-03-2018 12:21:00 PM ]
[ 10-03-2018 12:21:00 PM ] Checking Login and Password... OK
[ 10-03-2018 12:21:00 PM ] Ballance: 15 crd.
[ 10-03-2018 12:21:00 PM ] You have 15 credit(s) left. This operation takes 5 credits.Continue? Yes
[ 10-03-2018 12:21:00 PM ] Searching Samsung modem... detected COM371
[ 10-03-2018 12:21:00 PM ] Reading phone info... OK
[ 10-03-2018 12:22:00 PM ] Model: SM-A520W
[ 10-03-2018 12:22:00 PM ] AP version: A520WVLS2BRB1
[ 10-03-2018 12:22:00 PM ] CSC version: A520WOYA2BRB1
[ 10-03-2018 12:22:00 PM ] CP version: A520WVLS2BRB1
[ 10-03-2018 12:22:00 PM ] Product code: GLW
[ 10-03-2018 12:22:00 PM ] Phone SN: R58J30CBRSW
[ 10-03-2018 12:22:00 PM ] Unique number: CBJ102ADB46D724
[ 10-03-2018 12:22:00 PM ] Searching Samsung diag port... detected COM372
[ 10-03-2018 12:22:00 PM ] Reading phone info... OK
[ 10-03-2018 12:22:00 PM ] CP version: A520WVLS2BRB1
[ 10-03-2018 12:22:00 PM ] CP build: Jan 31 2018 14:20:08
[ 10-03-2018 12:22:00 PM ] Reading data from phone... error (1)
[ 10-03-2018 12:22:00 PM ] Searching server... OK
[ 10-03-2018 12:22:00 PM ] Checking available files... not found compatible file
[ 10-03-2018 12:22:00 PM ] Try downgrade modem if possible
[ 10-03-2018 12:22:00 PM ]