Advan S35i Stock Firmware ROM (Official SC7715 PAC File) B1 (20150907) Android 4.4.2

About Advan S35i Stock Firmware ROM

Advan S35i Stock Firmware ROM is the official factory operating system package provided in .PAC format for the Advan S35i smartphone powered by the Spreadtrum SC7715 (SP7715) chipset. This comprehensive flashing package contains the official PAC firmware (WG3528_S35i_SP7715_Flash512+256_4.4.2_20150907_B1.pac), USB drivers, and the dedicated SPD Upgrade Download Tool utility.

Key Issues Resolved by Flashing

• Fix device stuck on boot logo (bootloop), continuous restarting, and failure to boot into Android.
• Unbrick soft-bricked phones caused by interrupted updates, incorrect root attempts, or corrupted system modifications.
• Permanently eliminate stubborn malware, adware popups, and intrusive apps embedded into system partitions.
• Resolve persistent system crashes, force close dialogs, and severe operational freezing.
• Restore the smartphone completely back to original factory conditions for reliable daily usage.

Firmware Specifications

• Target Device: Advan S35i
• Chipset: Spreadtrum (SPD) SC7715 / SP7715
• Firmware Format: .PAC file
• Flashing Tool: SPD Upgrade Download Tool (included in package)
• Supported Host OS: Windows 11 / 10 / 8.1 / 8 / 7 / XP (32-bit & 64-bit)
• Package Contents: PAC Firmware File, SPD Upgrade Tool, USB Drivers, Instruction Guides

Step-by-Step Flashing Instructions

1. Download the firmware package and extract it to a clean directory on your PC using WinRAR or 7-Zip.
2. Open the driver folder and install the Spreadtrum USB Driver according to your Windows OS architecture.
3. Open the SPD Upgrade Download folder, right-click UpgradeDownload.exe, and select Run as administrator.
4. Click the first single gear icon (Load Packet) at the top-left corner and browse to select WG3528_S35i_SP7715_Flash512+256_4.4.2_20150907_B1.pac from the Firmware folder.
5. Wait a moment for the tool to verify and load the PAC file components into memory.
6. Click the Start Downloading button (Play icon).
7. Power off your Advan S35i completely. Press and hold the Volume Down key and plug the phone into your computer via USB cable.
8. Once the flashing progress bar begins moving, release the volume button.
9. Wait until the tool displays a green Passed notification. Disconnect the USB cable and power on your phone.