Which one of these options would I choose, I have cios rev13b installed
If you already have cIOS249 installed, select:
(Uses IOS249) Install/Upgrade to DARKCORP v1.0 (regular mode)
If you have cIOS249 rev18/19, but it’s not base 38, but you have
cIOS222 installed, select:
(Uses IOS222)...