Ensure your phone has at least 50% charge to prevent it from powering off mid-process.
Ensure the Spreadtrum drivers are installed properly and try a different USB cable or port. firmware acer sospiro a60
A green circle with a checkmark ("Download OK") will pop up when finished. Disconnect your phone and power it on. Ensure your phone has at least 50% charge
If you previously rooted your phone or installed a custom ROM and want to return to the secure, official factory environment, flashing stock firmware resets the device completely. official factory environment
Extract your firmware package (look for a .pac extension file) and the SPD Upgrade Tool on your PC.
Click the Play button (Start Downloading) icon.