combination files are only available for Samsung Android devices. you can call it Combination ROM or combination firmware, both of are correct , combination files are available in free Z3x box (samsung tool pro)
How does it work?
- repair the IMEI number in Samsung devices.
- Very Useful in the Remove Gmail account in many Samsung models.
- Remove any security FRP / Re-activation lock
- remove Google Accounts in many models.
- Downgrades Firmware version in Samsung models.
- Enable USB debugging