The "2021.11" version marked a significant jump in vehicle database coverage, expanding to include roughly 45,000 unique system selections. The "C4B" and "High Quality" designations typically refer to specific modified firmware or "patches" designed to improve the performance of Delphi DS150E or Autocom CDP+ hardware clones.
: Electronic Parking Brake (EPB) retraction for pad changes. delphi autocom 202111 c4b high quality upd
Connect your diagnostic box (e.g., DS150E) to the computer via USB. The "2021