Odin android

this is just the app to install the stock rom
ODIN is a third-party, Windows-based program created specifically to flash files such as ROMs on Samsung smartphones. ODIN is used in several different circumstances, such as flashing firmware or installing a custom ROM on the smartphone. ODIN has no special requirements beyond the Samsung USB drivers, which may be installed on your computer already depending on your smartphone usage.

Step 1
Download the ODIN ZIP file from the XDA Developer forums at forum.xda-developers.com. Extract the ODIN folder to your computer. The folder does not need to be in a specific directory or drive.
Step 2
Connect your Samsung phone to your computer with the data cable. Turn it off for 30 seconds. Turn the phone on while holding down your "Home," "Power" and "Decrease volume keys" until you enter download mode.
Step 3
Launch ODIN on your computer. Click "Auto Reboot." Click "PIT" and select the PIT file associated with the Android ROM you're flashing with ODIN. Click "PDA" and select the TAR file for the ROM.
Step 4
Click "Start" to add this ROM to your Samsung phone. The installation is complete when your phone automatically reboots.