I have a LP5 and I’ll try the new .LBDEV file next week.
I have loaded the .LBDEV file for Lightburn referenced in the xTool instructions for my S1. If there is a different one, please point me to it. The only issue I have with running lightburn with the S1 is the version 2. Version 1.7 works great with the S1.
My biggest interest is in engraving and cutting metal. The LP 20W fiber laser is considerably more powerful than my ComMarker 20W. My LP4 is great for engraving wood and marking metal but for reasons the LP people only understand, the settings for the LP 4 20W diode laser do not directly translate to the LP5 20W diode laser. Also, the LP4 1064 CW laser works better for marking some metals than the pulsed fiber laser in the LP5 and ComMarker. I had planned on selling my LP4 when I bought the LP5, but I have a gazillion files for the LP4 plus it marks thin metal better so I am stuck with keeping it.
A thought - since you don’t have a LP5, consider asking all of us LP5 owners to contribute so you can buy one - I would be happy to contribute $100 - $200 bucks. The LP people might even give you a price brake. The LP5 is just too damn expensive to not be able to be able to use the fiber laser for what it is good for - marking, engraving, and cutting metal.