First, we need to know, which prize we want to give for BC quest. In my version it is BOK +5.
Let's see item code for BOK +5 (we need only first three digits):
BOK+5 = 14 11 12 0 0 0 0
14 is item group
11 is Item ID
12 is Item LVL (from +0 to +13)
Now, let's convert these numbers to hex (use Windows Calculator)^
14 = E = 0E (need 0E instead of E)
11 = 0B
12 = 0C
Well, now the offsets in Olly dump:
0x00531A99- Item ID. Default is 22, change to 0B
0x00531A9B- Item Group. Default is 0E, leave 0E if you want to keep BOK+5 or change to whatever item group (according to your wish for prize)
Item LVL is somewhere between numbers 6A 00 6A 00 6A 00 at offsets near ItemID and Item Group. I' ve changed all these numbers at offsets:
0x00531AB0 Default 00, change to 0C (item LVL)
0x00531AB2 Default 00, change to 0C (item LVL)
0x00531AB4 Default 00, change to 0C (item LVL)
0x00531AB6 Default 00, change to 0C (item LVL)
0x00531AB8 Default 00, change to 0C (item LVL)
Changing only first (0x00531AB0) offset doesn't work. So, change all of them. If you want to put BOK+2 as a prize, your Item LVL will be 9 (09 in HEX) BOK+3 is 10. Well, for other item codes refer to attached file.