When you set up your fbus connection,use wizard with a phone powered on .
Or go to configuration panel and set manually number of comport at 2 or 3 and restart.
After that try to unlock a phone with pbb unlock 2.0 .
I usually use for a lot of phone a 7210 dku5 rj45 cable for unlock,for flash service cable of ufs3 or twister or jaf work good.
sometimes i must power on phone manually for have Local Mode....
I'm making a PBB user guide for all (installation,features,troubleshooting),i hope finish it very soon and share it with all pbb users.