Surprisingly, yes. The Xperia modding community continues to maintain devices like the Xperia Z3 (over 10 years old) for custom ROM projects like LineageOS 18.1 (Android 11). These older devices require an older, proven flashing tool that doesn’t introduce new bugs or drop legacy fastboot commands.
: Using this tool requires specific drivers (Flashtool drivers) and often necessitates putting the phone into "Flash Mode" by holding a specific button (like Volume Down or the Back button) while connecting the USB cable. flashtool 0.9.18.6
: Install the drivers located in the C:\Flashtool\drivers folder. You will specifically need the "Flashmode" and "Fastboot" drivers. 2. Downloading Firmware Instead of searching manually, use the built-in tool: Navigate to Devices > Check Updates . Select your device and variant from the list. Surprisingly, yes