The market is flooded with fake "C4b" interfaces that are actually re-flashed C4 units or generic FTDI chips.
: Includes extended database features from genuine software and updated generic parsing. Delphi Autocom 2021.11 C4b
The 2021.11 update is particularly popular for "Single PCB" boards, which are often cited by users on AliExpress for their stability during complex procedures like ECU coding or long-term monitoring. Technical Requirements for Installation The market is flooded with fake "C4b" interfaces