Xhorse VVDI MB BGA Tool is able to renew Mercedes ECU, gearbox and ISM. Here is the example on renewing W164 ISM. Online Password calculation is required.
Well connect VVDI MB with ECU and laptop via cables
Select Renew ECU/Gearbox Function
Select Module: ISM
Click on Read to read ISM info.
TP cleared: Yes
Calculate password from server
Password is calculated, click on Renew
Click on Read button
Renew in progress
Click on Read again