How to unroot Samsung Galaxy S3 device

Because of warranty I needed to unroot my S3. After a lot of searching I found following articles which helped me to revert my phone to factory defaults.

Used software

  • TrianglAway – tool for reseting flash-counter inside the android firmware
  • SamMobile – server with all Samsung S3 firmwares
  • Samsung Updates – Official Samsung site with all firmwares