A520F Latest security patch

Checking Login and Password... OK
Ballance: 10 crd.
You have 10 credit(s) left. This operation takes 5 credits.Continue? Yes
Searching Samsung modem... detected COM982
Reading phone info... OK
Model: SM-A520F
AP version: A520FXXU4BRB6
CSC version: A520FOJV4BRB1
CP version: A520FXXU4BRAH
Product code: MAT
Phone SN: R58J72XVQ0H
Unique number: CBJ100D9FFCC554
Searching Samsung diag port... detected COM981
Reading phone info... OK
CP version: A520FXXU4BRAH
CP build: Jan 30 2018 08:46:21
Reading data from phone... error (1)
Searching server... OK
Checking available files... not found compatible file
Try downgrade modem if possible

Done with Samsung Tool PRO v.31.0