Combo Ide5216co

There is COMBO IDE5216CO in my PC.
I had firmware like 0Mxx
I “upgraded” it my combo to 0K52 using this http://www.btc.com.tw/drivers/zip/combo/COMBO5216_0K52_IDE.EXE utility.
Is it possible to roll back to 0Mxx firmware as I’m not satisfacted with new results.
Is there any utility to dump/backp firmware.