{"upgrade_methods":["usb"],"dev_info":{"unlimited":false,"unlimited_boot":true,"id":3730,"vid":0,"pid":0,"boot_vid":0,"boot_pid":0,"merge_upgrade":true,"need_check_version":false,"upgrade_time":-1},"version_info":{"usb_version":"0","rf_version":"0","nordic_version":"0","mled_version":"0","oled_version":"0","touch_screen_version":"0","flash_version":"0"}}