I have a 4.1v Dues with the original 9 inch LF coil. I don't plan on getting a HF coil or an X coil. Should I really bother to upgrade to the latest software?
It only takes a few minutes. Maybe you can try it out and see what you think. If you don't like it you can change it back. Gary Blackwell said the LF coils work fine with v5.21