I have the DIY opensprinkler kit( HW vers. 1.0) running firmware 1.8.3. Everything is running just fine, no problems. What I’d like to do is put a copy of firmware 1.4 on a different 328 chip and use that chip in the device. I have several of the chips but do not know if there is a bootloader on the chips. I do have a USBtinyISP that I did use to install fw 1.8.3 when it was first released. So I cannot remember all the details to load a blank chip(suspected blank chip). Can someone help me out with doing that?