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OPPO Find X2 Pro
Unlock region
Install loopback network device
run hdwwiz
choose network adapters from add hardware wizard
choose microsoft, then Microsoft KM-TEST Loopback Adapter
open device manager, double click loopback adapter
in Advanced tab, update Network Address to 704D7B61ABCD
disable all other network adapters
now it's ready to unlock
open Sec5.exe
On the phone, enable developer mode and debugging
use MTP mode
click unlock in Sec5.exe
OK will be displayed on right panel and flicker a couple of times
dial *#3954391#
dail *#391#
choose desired region