Samsung J530F Vodafone Ireland not unlock via server

Hi! I have Samsung J530F Vodafone Ireland not unlock via server, give an error of modem(need to downgrade)...
How to unlock this phone?
Checking Login and Password... OK
Ballance: 30 crd.
You have 30 credit(s) left. This operation takes 5 credits.Continue? Yes
Searching Samsung modem... detected COM48
Reading phone info...
Model: SM-J530F
AP version: J530FXXU2ARA2
CSC version: J530FVFG2AQL1
CP version: J530FXXU2ARA2
Product code: VDI
Phone SN: RF8JA2xxxxxx
IMEI: 35155409xxxxxx
Unique number: CAJ0013C3B691A4
Searching Samsung diag port... detected COM47
Reading phone info... OK
CP version: J530FXXU2ARA2
CP build: Jan 12 2018 14:09:15
Reading data from phone... error (1)
Searching server... OK
Checking available files... OK
Available CP file for downgrade, try download and flash? Continue? Yes
Downloading file... OK
Checking local file... OK
Switching to flash mode... OK
Searching USB Flash interface... COM12 detected
Setup connection... OK
Reading data from phone... OK
Sending data to phone... OK
Searching Samsung modem... detected COM48
Reading phone info...
Model: SM-J530F
AP version: J530FXXU2ARA2
CSC version: J530FVFG2AQL1
CP version: J530FXXU2AQL2
Product code: VDI
Phone SN: RF8JA2xxxxxx
IMEI: 3515540987xxxxxxx
Unique number: CAJ0013C3B691A4
Searching Samsung diag port... detected COM47
Reading phone info... OK
CP version: J530FXXU2AQL2
CP build: Dec 5 2017 15:32:33
Reading data from phone... error (1)
Try downgrade modem if possible

Done with Samsung Tool PRO v.31.5.1