No Service After MTK Flash Overview

When a MediaTek Android device shows "No Service," "Emergency Calls Only," or no signal bars after firmware flashing, it typically means the modem partition (NV data) was corrupted or erased during the flash operation, resulting in IMEI loss. This is one of the most common post-flash issues on Tecno, Infinix, Itel, Samsung MTK, and other MediaTek devices in 2026.

Diagnosing the Problem

  1. Dial *#06# to check IMEI
  2. If IMEI shows 000000000000000 or null — IMEI was erased
  3. If IMEI shows correctly but no service — network or modem issue
  4. Check Settings → About Phone → Baseband Version
  5. If baseband shows Unknown — modem firmware corrupted

Fix Method 1 — Reflash with NV Backup Restore

If you had an NV backup before flashing:

  1. Open SP Flash Tool
  2. Go to Read Back tab
  3. Restore your NV data backup
  4. Reboot — IMEI and network should restore

Fix Method 2 — Use Scatter File with NV Protection

  1. Open scatter file in text editor (Notepad)
  2. Find the NVRAM partition entry
  3. Set is_download to false for NVRAM partition
  4. Save scatter file and reflash
  5. This skips NVRAM during flash and preserves IMEI

Fix Method 3 — IMEI Write Tool

  1. Find original IMEI on device box or back sticker
  2. For MTK devices use MauiMeta IMEI repair tool
  3. Enter META mode: hold Volume Up + USB connect
  4. Write original IMEI via MauiMeta
  5. Restart — network signal returns

Fix Method 4 — Reflash Firmware Excluding NVRAM

  1. In SP Flash Tool load scatter file
  2. Uncheck only the NVRAM and NVDATA partitions
  3. Flash all other partitions normally
  4. NVRAM preserved — IMEI and network settings intact

Conclusion

No service after MTK flash is fixed by restoring IMEI through NV backup or IMEI write tools, or by reflashing firmware while protecting the NVRAM partition. Always create NV backup before flashing MTK devices. Download MTK firmware and repair tools from this website for all Tecno, Infinix, and Itel models.