Is the L3 and L3+ the same as far as using this tool?
Unfortunately all I have are L3+'s, so I don't know. If they are using the same pic, the answer is yes. If you have one and want to try, it will tell you if it doesn't find the same pic version. The L3 version expects a pic software version of 0x03, the A3 version expects a pic version of 0x81 and uses a slightly different protocol.