Download Sony SmartWatch 3 SWR50 Rom. Sony Xperia Stock ROM helps you to downgrade or upgrade or reinstall the stock firmware on your Sony Xperia Smartphone and Tablets. It also helps you to fix any software related issue, bootloop issue, IMEI issue on your Xperia Device. Model Name: Sony SmartWatch 3 SWR50 File name: Sony_SmartWatch_3_SWR50. Jan 31, 2020 · Sony SmartWatch 3 SWR50 - user opinions and reviews. Released 2014, October 76g (38g body), 10mm thickness Android Wear OS 4GB 512MB RAM storage, no card slot; 0.2% 604,088 hits; 62.