I just stumbled upon this thread. I’m having the same issue. I thought I was just imagining it, but the depth and iron grunt issues you’ve described is exactly what I’ve experienced with my updated Manticore. Frustrating. My machine is also falsing a lot, even with stock Ferrous Limit settings. I even tried the Stabilizer function, but that didn’t seem to help. I’m currently getting my stock coil replaced for my 800, so I haven’t been able to do a side-by-side comparison in real-world settings. But after spending thousands of hours with the 800, I can just tell that the Manticore isn’t acting like a Minelab should. For reference, I live in Washington state and our soil is pretty mild. I was planning on just going back to the original software, but I see now that that is not an option? I’m going to contact the dealer first and go from there. Thanks for bringing this up.