J710f Efs File [work] Jun 2026

for your specific device variant.

Unlike Qualcomm Snapdragon phones, the J710F uses Samsung’s chipset. This means:

Connect your phone to the PC. The ID:COM box in Odin should turn blue, indicating a successful connection.

If you have no EFS backup, your options are more limited but not impossible.

The software link that allows Android to communicate with the modem hardware.

Installing a ROM that is not compatible with the specific J710F variant or has a flawed installer.

The software cannot talk to the cellular radio hardware.

Radio configuration settings for your specific region/carrier.