Kpt-fish
Are you using windows still? I could not get Windows to recognize the phone from Odin.
My advice is use Linux, I use Ubuntu 16.04. Go to https://doc.e.foundation/devices/i9300/install and follow instructions. Choose “Get started”, “Download the files”, drop down the list and choose “Samsung Galaxy S III (International)” and click on I9300. Choose the first option “Install” and “click here”
- First thing to do “Preparing to install” Heimdall" Click on “Install Heimdall”. Under “Download Heimdall Binaries” Click “here”. Choose the Ubuntu file, do the sha256 sum and put the file in “Home”. The file was Heimdall 1.42 for me. Putting in Home means access is /name/home/file name. The name is the name of the computer owner.
- Next under "Installing a custom recovery Click on “TWRP”, download the latest .img file and place it in “Home”
- Under" Download /e/ for i9300" click on “Dev” Download the latest .img file check the sha256 sum and place in “Home”.
Use the Sideload method , it does work. If you don’t understand, do a search for precisely what you want to do. If you get stuck somewhere let us know where. Remember to plug the USB lead in only when they tell you.
Veil Gluck