1- Open the XDelta GUI.exe file
3-Select the Pokemon Neo SoulSilver.patch(for example) and then click Open.
4-Click Select ROM.
1.1 ? 1.1 in my native tongue ? 2.0 SP 2 ? 3.0 SP 2 ? 3.5 SP1 ? 4.0 ?
Should I delete the oldest one and keep only the last one or should I use them all ?