You have to use Emma from Sony under Windows.
You’ll find infos there:
You can download emma there:
https://developer.sony.com/develop/open-devices/get-started/flash-tool/download-flash-tool/
You have to use Emma from Sony under Windows.
You’ll find infos there:
You can download emma there:
https://developer.sony.com/develop/open-devices/get-started/flash-tool/download-flash-tool/
I would do the Emma tool flashing as @ESON proposed. This helped me to fix my Xperia 10 plus. However, for downloading pure Android you could check: Images système génériques (GSI) | Plate-forme | Android Developers