this is the new sd c4, which can support doip.
The new SDconnect C4 (1:1 clone of the original) is able t o work for DoIP.
It's the only C4 that supports ethernet communication (DoIP).
Have tested no issues on new Mercedes with DoIP.
You don't have to install batteries for firmware update. No need worry about firmware damage in the update process The wireless connection is stable.
C4 is connected automatically to WLAN for diagnostic tests.
Also, remote help is available. The C4 machine has good quality.
It's waterproof, shockproof and tamper proof.
PM me if you are interested in doip sd c4.