What does Error Code -1 mean?
Odin (Samsung flash tool) failed to flash firmware. Device disconnected or firmware mismatch.
Common causes
- Wrong firmware region/CSC for device
- USB driver not installed
- Cable disconnected during flash
- eMMC/UFS storage failure
Diagnostic & testing steps
- 1. Verify firmware matches exact model number (SM-XXXXU = US carrier, SM-XXXXF = international)
- 2. Reinstall Samsung USB drivers (Odin drivers)
- 3. Try different USB port and cable
- 4. Use PASS firmware matching device's original firmware
- 5. Check eMMC by observing if device shows up in TWRP/ADB
Tools required
- Computer with Windows
- Samsung Odin software
- USB cable
OEM parts & part numbers
eMMC/UFS Storage IC
Part numbers: GH82-26909A
Safety warning
⚠️ Incorrect firmware can cause permanent brick. Always match model number exactly.
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