I updated to the latest Beta 7 software and updated my V2 firmware and I'm having the same problem you helped me with yesterday with Beta 4 software, EFILive Explorer not responding. If I format the SD card with the V2, Explorer opens correctly and I can copy a .ctz file to the SD card. I then remove the SD card from the V2 and insert it into my laptop card slot and copy a .ctz file to the SD card. I put the SD card back into the V2 and try to open Explorer and it does not respond. I've tried deleting the file I copied with the laptop both from the laptop and with the V2, but no change. I know I've used my laptop (Windows 10) to copy tune files to the SD card before because it is much quicker, without problems. The only fix is to format the SD card again and use Explorer to copy files. Also when I'm copying a file to the SD card, the green progress bar sometimes stops progressing.