Usually means a driver conflict or poor USB connection.
(dial *#06# to get it).
Let’s rewind. In the mid-2000s, Sony Ericsson introduced a security zone called (Customer Identity Differentiation). By CID16 and CID36, things got nasty. Commercial unlockers used custom hardware to send specific SE chips a "bootstrap" loader. aerix v099 unlocking sony ericsson 2 fixed