Replied by Juliana on Sep 22, 2013
Hi, dear friend,
Yes, there are mainly two differences:
First, both of them need to register. But SP78 has already been registered before shipped out, so no need to register again by yourself, you could use it directly.
SP78-B needs to register by yourself, please send us your serial number (S/N) and we will send you ID and password. For the detailed steps, please read the Digimaster III user manual.
Second, SP78 needs no tokens when it works with the Digimaster 3 supported cars, only after the factory develops the newest supported car models it will need tokens, if it needs tokens, Digimaster 3 main unit will prompt you.
SP78-B needs tokens when it works with the car models with CPU chip and SCM, but no needs for most car models with Octagonal chips.
If you have any questions, please feel free to contact us.