Download File S706c-7731-d2(168)-v1.0.part1.rar Link

Install the Spreadtrum USB Drivers on your PC so the computer can recognize the device in "Download Mode." Flash the Firmware: Open the SPD Upgrade Tool (also known as ResearchDownload). Load the .pac file extracted from your archive. Click the "Play" or "Start" button.

Ensure the device has at least 50% battery before starting to prevent a shutdown during the process. Download File s706C-7731-D2(168)-V1.0.part1.rar

Ensure your device's motherboard ID matches "s706C-7731-D2" exactly. Flashing the wrong version can permanently damage (hard brick) your hardware. Install the Spreadtrum USB Drivers on your PC

Power off your device, hold the (or Volume Up) button, and connect it to the PC via USB. Important Precautions Ensure the device has at least 50% battery

Use a tool like WinRAR or 7-Zip to extract part1.rar . It will automatically pull data from the other parts to create the final folder.