Without a personal backup, you will recover your original IMEI. The phone will work with a generic IMEI, but it may fail carrier checks, VoLTE, and certain banking apps.
Samsung introduced EFS v2 with Android 4.3 (Jelly Bean). If you upgraded to 4.3 or 4.4 and then tried to downgrade to 4.1.2, the older OS couldn't read the new EFS structure, leading to corruption.
If you're experiencing issues with your i9300 EFS file, here are some steps to try:
You have a backup. Your phone shows null IMEI. Here is how to restore.
Without a personal backup, you will recover your original IMEI. The phone will work with a generic IMEI, but it may fail carrier checks, VoLTE, and certain banking apps.
Samsung introduced EFS v2 with Android 4.3 (Jelly Bean). If you upgraded to 4.3 or 4.4 and then tried to downgrade to 4.1.2, the older OS couldn't read the new EFS structure, leading to corruption.
If you're experiencing issues with your i9300 EFS file, here are some steps to try:
You have a backup. Your phone shows null IMEI. Here is how to restore.