Autel MaxiIM IM508 (with XP400) and IM608 is capable of renewing Mercedes ECU/ISM CR3.xx, CR4.xx CR5.xx, CR6.xx, CR60.xx, CRD.11, CRD2.xx, ME9.7, MED17.7.x, SIM4LE, SIM4LKE, SIM266 etc. This function can be completed only on bench. Some ECUs can be done with or without GBox, some do require the Gbox. Here is the demo guide on renewing W203 ECU CR3.44…