[Ovmsdev] can log

I want to create log file from can messages while Lexia connected to obd, but many message has dropped. My sd card is too slow to write all data? I start logging with can log crtd /sd/lexia.crtd command Closing log: Type:crtd; Path:'/sd/lexia.crtd'; Filter:off; Vehicle:MI; Statistics: total messages: 3334194, dropped: 2707476 = 81.2% In can log i can see the incoming messages? This is a RX message: 175594.785 1R11 346 27 10 40 00 00 00 00 42 if 1R11 is 1T11 this is a TX message on CAN1? How can i download the log file, the easiest way, because if i use browser and add the file url (ip/lexia.crtd) the browser load its content.