LM/IM v3.0
Same as 2.5, but for rev D-F boards. Last version for older PIC16LF877A processor.
LM/IM v4.1
Improved high frequency response in IFB mode.
LM/IM v4.2
Increased robustness of memory storage.
LM/IM v5.0
Switched to National PLL, added “mode 6” compatibility and digital subsonic filter.
LM/IM v5.1
last update