Flash eng-boot
1-Put the phone at download mode
2-Run Odin.exe.
3-Flash the J260T1-RESET-SEC.tar.
4-Hard reset the phone, then restart to system.
5-When get at setup screen, go back to download mode.
6-At Odin.exe flash J260T1-RESTORE-ORIGINAL-IMEI.tar.
7-Wait phone restart fully, go to recovery (Keep press Vol+, Home and power), then hard reset the phone.
8-Reboot to Download mode, flash J260T1-UNLOCK-KEEP-IMEI.tar.
9-finish done.
1-Put the phone at download mode
2-Run Odin.exe.
3-Flash the J260T1-RESET-SEC.tar.
4-Hard reset the phone, then restart to system.
5-When get at setup screen, go back to download mode.
6-At Odin.exe flash J260T1-RESTORE-ORIGINAL-IMEI.tar.
7-Wait phone restart fully, go to recovery (Keep press Vol+, Home and power), then hard reset the phone.
8-Reboot to Download mode, flash J260T1-UNLOCK-KEEP-IMEI.tar.
9-finish done.