Disconnect your phone, download the latest official Samsung USB Drivers for Windows, install them, and restart your computer.
Disclaimer: Flashing firmware carries risks. These methods are provided as-is, and you are responsible for your device.
If the operation fails immediately, your phone’s security might be blocking the write command.
Before fixing the error, confirm you are seeing the correct one. In Odin’s message box (the bottom-left panel), you will see something like: repartition operation failed odin
Typically, you flash firmware without the "Re-partition" option checked. Odin simply overwrites existing data within the established partitions.
Different generations of Samsung devices require specific versions of Odin. For older devices (Android 8 or older), use .
The firmware package ( .tar or .tar.md5 file) is incomplete, corrupted, or compiled for a different region/model variants. Disconnect your phone, download the latest official Samsung
Flashing a SM-G950F with a SM-G950U1 PIT file will trigger an immediate "Repartition operation failed" because the partition sizes differ (e.g., different modem partitions for CDMA vs GSM).
If you are reading this, you have likely been staring at a red or blue progress bar in Odin that suddenly stopped, followed by a dreaded message in the log box:
Low-quality cables or unstable USB ports interrupting data transmission. If the operation fails immediately, your phone’s security
For older devices (Android 4.4 to Android 7), use .
Load the file starting with CSC_ * into the CSC slot in Odin. This triggers a clean factory wipe and forces the system to accept the new partition structure safely. 3. Extract and Inject a Dedicated PIT File
This is a safety feature on Samsung devices. Samsung firmwares have a "Binary" or "Bit" number (e.g., Bit 1, Bit 2, Bit 3, etc.). You cannot downgrade this number while repartitioning.
Samsung devices are notoriously picky about cables. Ensure you are using an OEM high-quality data cable.