The tester seems to be excellent. Registering and updating is on the tricky side. When I called Autel tech support, I was able to get to work despite annoying Chinese appearing on my desktop screen during the software installation. If the Chinese language pops up during the update process, please don't cancel the installation but continue the installation to update Autel TS508 successfully. If Autel removed the Chinese language, I would feel much more comfortable.