: Hold Shift while clicking Restart . Go to Troubleshoot > Advanced options > Startup Settings > Restart . Press 7 or F7 to "Disable driver signature enforcement".
: You can also check Advanced options > Optional updates in Windows Update settings to see if Microsoft hosts a compatible version. s1 service draiver skachat
: Connect your phone in Flash Mode (usually by holding Volume Down while plugging in the USB). Right-click the "S1 Service" or "Unknown Device". : Hold Shift while clicking Restart
: Most users download the Flashtool drivers, which include "S1 Boot" and "S1 Service" drivers for various Xperia models like the Xperia Z or C. s1 service draiver skachat
: While mostly discontinued, legacy versions of the Sony support utility originally provided these drivers.