The Sony S1 is over a decade old. Its Tegra 2 processor is limited to Android 4.0.4 (officially) or Android 4.4 (via custom ROMs like "SlimKat"). The is the key to keeping this piece of history functional.
Open , right-click the "S1 Service" or "S1Boot" entry with the yellow exclamation mark, and select Update Driver . Sony S1 Service Driver 64 Bit
– Some developers repackaged the Fastboot drivers under the "Gordon’s Gate" driver set, which is compatible with the Tegra 2 chipset found inside the Sony S1. The Sony S1 is over a decade old