What you need

• An Android phone (this will run the Eros app and act as the flasher)
• The Samsung phone you want to flash
• OTG adapter + USB cable (good quality)
• Eros Engine APK (install on the flasher phone)
• Firmware for your Samsung model from samfw.com

Important safety notes

• Flashing may erase user data. Back up the phone before flashing.
• Always use the exact firmware for your model and region.
• Use a reliable OTG cable and a charged battery (50%+ recommended).
• Interrupting the flash can brick the device — do not disconnect cables during flashing.

Step-by-step flashing process

1. Download the correct firmware (.tar.md5 or .tar) from samfw.com.
2. Install the Eros Engine APK on your Android (the flasher). Allow unknown apps if needed.
3. Put the target Samsung phone into Download Mode:
   Common method: Power off → Hold Volume Down + Volume Up while connecting USB → Press Volume Up to confirm.
4. Connect phones with OTG + USB cable (flasher phone as host).
5. Open Eros Engine on the flasher phone and wait for it to detect the Samsung device.
6. Load firmware files in the matching slots: BL, AP, CP, CSC. If you only have a single AP file, load it into AP.
7. Tap Start (or equivalent) in the app and wait until completion.
8. Phone will reboot automatically when flashing finishes.

Troubleshooting

• If the device is not detected: try another OTG cable or enable USB debugging (if possible).
• If flashing fails: re-download firmware and check model/region codes.
• Stuck at boot loop after flash: try factory reset in recovery (will erase data).

Quick checklist before flashing

• Correct firmware for model and CSC
• Battery charged (recommended ≥ 50%)
• Good-quality OTG and USB cable
• Backup of user data