- Download the latest version of Heimball: http://www.glassechidna.com.au/products/heimdall/
- Install the the .deb package
Just double click on it :)
- Download your favorite version of the Stock ROM: [ROM+Guide]Official i9100 Firmwares KG, KH, KI1/2/3/4/8, KJ1/2/3, KK1/2/5 Download - xda-developers
- Unpack the file “I9100********.tar.md5”
tar xvf I9100*****.tar.md5
- Boot your phone to download mode
- Switch it off
- Press and hold Home+Volume Down+Power until you see the “Warning” message
- Connect via USB to PC
- Confirm it with Volume Up
- Check if the phone is detected
heimdall detect
- Flash it with heimdall (do it with as root to avoid access problems to usb devices)
heimdall flash --primary-boot boot.bin --cache cache.img --factoryfs factoryfs.img --hidden hidden.img --modem modem.bin --param param.lfs --secondary-boot Sbl.bin --kernel zImage