Íó ÷òî íåïîíÿòíîãî?
Mcu - Rm84_50737301.C0
ppm - rm84_50737301.V05 (èëè .V25)

RM84 - Òèï ïðîäóêòà (N70)
50737301 - Âåðñèÿ ÏÎ (5.0737.3.0.1.)
.Ñ0 - mcu (îñíîâíîé ôàéë ïðîøèâêè)
.V1....25... - ppm (ñîáñòâåííî ôàéë ëîêàëèçàöèè (íàáîð ÿçûêîâ))