I've received 2 'old' FMD88-10 that have firmware 78A and 78B
I'm currently developping on a third one that have firmware R81
I've read in the forum that it's not an easy task to upgrade it.
By seaching in the manuals, most of the functions i'm using are available and program upload seem to fork fine.
But I wonder if there are some bug fix, behaviours modifications and so between the differents firmware?
Is it possible to know (even in PM) what are the differences between theses firmware to avoid a deep testing again of the software on the others PLC
Regards