IMEI Repair: Everything You Need to Know About IMEI/MEID Restoration
What Causes IMEI Corruption?
The IMEI is a unique 15-digit number stored in a protected partition (EFS/modem). Corruption typically occurs due to failed firmware flashes, interrupted OTA updates, improper root procedures, damaged EFS partition, or water damage.
Symptoms of IMEI Corruption
- No signal / No service — Device cannot register on any network
- Null IMEI — Dialing
*#06#shows null or 0 - Baseband unknown — Settings shows “Unknown” for baseband version
IMEI Repair on Qualcomm Devices
Qualcomm devices store IMEI in modemst1/modemst2 partitions. Tfast Unlocker writes the correct IMEI directly to these partitions using the Qualcomm diagnostic interface (DIAG mode, port 901D).
- Connect device in DIAG mode
- Select your device model in Tfast Unlocker
- Enter the original IMEI (from device box or SIM tray)
- Click “Write IMEI” and wait for completion
- Reboot — network should restore immediately
IMEI Repair on MediaTek Devices
MediaTek devices use the NVRAM partition. The BROM connection method allows direct NVRAM access without requiring any special device mode.
Legal Disclaimer
IMEI repair should only restore the original IMEI. Changing IMEI to a different number is illegal in most countries. Always use the IMEI printed on the device label or box.