N7100 Imei Null Best

Click Start . The phone will reboot.

This method is technically legal if you are restoring your own original IMEI (the one printed on the sticker under your battery). Writing a fake or someone else’s IMEI is a federal crime in most countries (Computer Fraud and Abuse Act). Only restore the IMEI that came with your device. n7100 imei null

The N7100 was notorious because Samsung stored critical radio calibration data (including the IMEI) in a proprietary stl or efs partition (often mmcblk0p3 ) using an RFS (Robust File System) with a custom FAT-like structure . A simple factory reset or a failed custom ROM flash could scramble the directory pointers, making the modem firmware read NULL instead of the IMEI. Click Start

No. A factory reset wipes user data (apps, settings). It does not touch the EFS partition. You need the manual injection method. Writing a fake or someone else’s IMEI is

If the EFS is completely destroyed and the above fails, you must repartition the phone using a PIT file. This erases everything and rebuilds the partition table.

Dial *#06# . If you see a number now, you are done. If you still see "null," proceed to Method 2.