[ferbmw]

Use ISTA+ if you have less experience and a car with no retrofited ECU. Everything is guided with a lot of safety for your job. The guided process will help you to come not in (to much) trouble.

If you have anything retrofited you are forced to use Esys. Here you need some effort to learn how to do the job without bricking your ECUs. The possibility to do some things which will leave you crying and asking for help to move the car is also much higher.

Is it necessary to use Enet cable or  ICOm when using Ista+? Car is G20 2019