Before You Begin:

How to Prepare for Firmware Flashing on Vivo Y1s

Some recalls have also included firmware flashing and will not include flashing firmware on your Vivo Y1s because it is a delicate process and any small mistake can lead you to lose your data or device. Please make sure to take care of everything to have a safe and proper flashing process.

Essential Preparations

• Backup Your Data: Flashing firmware will factory reset your device, deleting everything already present on the device, so save all important files, contacts, messages, and media to cloud storage or an external device.
• Charge Your Phone Properly: Have a stable battery on your Vivo Y1s (at least 80%) or plug it into a power source to avoid power interruptions during the flashing process.

Download Official Firmware

So, go to the official Vivo website or any trusted source and download the precise firmware corresponding to your Vivo Y1s model. However, make sure you have the correct version so you are not stuck in a boot-loop or dealing with software errors.

Flashing Process: Step by Step

• Set Up USB Drivers
• Download and Install USB Drivers for Vivo Y1s on your computer if in case you have not done it yet. These drivers allow your PC and device to communicate correctly. The official USB drivers can be downloaded from Vivo’s support page.

Download and Install the SP Flash Tool

• SP Flash Tool is a common utility that is used for flashing MediaTek devices, including a lot of Vivo smartphones. SP Flash Tool helps in flashing images and you will need to install the latest version of it on your pc-Download it from any trusted source.

Extract the Firmware File

• After, when the download process is completed, you need to extract the firmware file using, for instance, WinRAR or 7-Zip. Inside the extracted folder are necessary files, such as the scatter file needed by the SH Flash Tool.

Launch the SP Flash Tool

• Launch the SP Flash Tool on your computer without any error.

Load the Scatter File

• Now, click on “Scatter-loading @ the SP Flash Tool.
• Now go to the previously extracted firmware folder and click on the scatter file.
• The tool needs some time to properly load the firmware files.

Turn Off Your Device

• First things first, turn off your Vivo Y1s completely.
• Connect Your Device to the Computer
• Connect your Vivo Y1s to the computer with a good USB cable.

While connecting, make sure the device remains powered off.

If the right USB drivers are installed, the SP Flash Tool will automatically detect your device.

Start the Flashing Process

• Now open the SP Flash Tool and click on the “Download” Button.
• The tool will start flashing the firmware files on your Vivo Y1s.
• Please do not disconnect the USB cable or power of this PC until this process has finished.

Wait Until the Flashing Process Completed

Do this a few times until you have finished flashing and it may take a few minutes. Wait for the SP Flash Tool progress bar. If everything goes as planned, the tool will show a green circle or some success message when finished.

• Disconnect from the power supply and turn off the device
• After the Vivo Y1s is connected to the computer, disconnect it.

Power on your device.

• Expect the first boot after flashing to take longer than usual — give it time to finish setup stuff.

Important Notes

• Only Use Official and Trusted Firmware: You can severely damage your device, including bricking it, by installing firmware that you are not authorized to install.
• Check Firmware Compatibility: Flashing faulty firmware may cause irreversible software errors. Always verify your device model before downloading firmware files.
• Disclaimer: Flashing Voids Warranty: This may void your device’s warranty. If you’re not sure, reach out to Vivo support for assistance.
• Backup: Make sure your files are backed up, as flashing erases files.
• Flashing Process: DO NOT DISRUPT the Process: Interrupting the flashing can corrupt software or brick your device.

Final Thoughts

This guide will help you understand how to flash firmware on Vivo Y1s using the SP Flash Tool, what requirements are necessary, and why you should perform it. As there are various versions of the firmware and tools, the procedure may differ slightly. For your specific model, always check the official guides and resources. In case you cannot fix the issue, you can contact Vivo customer service or an authorized service center for professional help.