Power off the phone, then hold Volume Down + Home + Power simultaneously. Confirm with Volume Up.
Installing firmware on a G900F requires a PC and a tool called . skachat proshivku g900f
If the phone gets stuck on the Samsung logo after flashing, boot into Recovery Mode ( Volume Up + Home + Power ) and perform a "Wipe Data/Factory Reset." Power off the phone, then hold Volume Down
Extract the firmware (usually a .tar.md5 file) and load it into the AP (or PDA) slot in Odin. Flash: Click "Start" and wait for the "PASS!" message. Safety and Troubleshooting ⚡ Warning: Flashing firmware carries risks. Power off the phone