FormulaFlash programmer supports IMMO OFF functions for Korean Kia Hyundai ME17.9.21.1 ECU in the device without 3rd party software/devices.
Quick search for ME17.9.21.1 ECU. Available on bench and boot mode.
Choose bench mode connection.
There are 4 versions of bench pinouts for this ECU.
Select one that matches your ECU.
Set up bench connection according to the diagram.
Connect ECU.
Read and save eeprom & flash data.
Click IMMO Off function.
It will save flash again.
Then do IMMO OFF.
Click Yes to correct checksum.
Then process data.
Write data successfully.
It’s done.
Install ECU back to car.