Flash File Firmware Vivo S11T | Fix No Signal or SIM Not Detected After Flash
Is your Vivo S11T showing "No Signal" or not detecting SIM cards after flashing firmware? This issue is usually caused by a corrupted NVRAM or incorrect baseband configuration. Here's the tested Vivo S11T stock ROM (MT6577 chipset) with the official scatter file, preloader, and DA/Auth support to restore your device.
📡 Problem Fixed in This Flash File
- Vivo S11T not showing network signal
- SIM 1/SIM 2 not recognized after firmware update
- Invalid IMEI or Baseband Unknown issue
- Emergency calls only or airplane mode stuck
⚠️ Preparation Before Flashing
Important: Flash only on the correct model (Vivo S11T MT6577). Backup your NVRAM or IMEI if possible. Flashing wipes your full device and may remove network calibration data if you use the wrong files.
🔧 Flashing Instructions for Vivo S11T
- Download and extract the firmware ZIP using WinRAR or 7-Zip.
- Install MediaTek USB Drivers on your PC.
- Launch the SP Flash Tool.
- Click
Scatter-loadingand select the MT6577 scatter file from the extracted folder. - Click Download in the tool.
- Turn off your Vivo S11T completely.
- Hold the Volume Down key and connect the USB cable to the PC.
- Flashing will begin automatically. Wait for the green checkmark.
📂 Firmware Details
| Component | Description |
|---|---|
| Vivo S11T Firmware | Stock ROM with scatter, preloader, DA file |
| SP Flash Tool | Required to flash MTK-based firmware |
| MTK Drivers | Allows PC to detect Vivo S11T during flash |
📌 Additional Fix: Invalid IMEI
If your SIM is still not detected after flashing, your IMEI may be corrupted. Use Maui META Tool or SN Write Tool to write the original IMEI numbers from the sticker under your battery.
Still facing issues? Visit Firmware4Mobile.com for more tools and IMEI repair guides. Drop your questions in the comments if you need help with the Vivo S11T firmware flash process.