Its your decision both will work.
v1.5 would work but swap to 1.7(since your at it):D
thanks my work too nice work so i can buy old games off there right my wife love the old super mario brothers
Will this work on a 4.1U version that I modded last year?
Yes it will.
Just another stupid question, I got wanin cios rev 17. Will that one work with the Wad Manager 1.7 or do I have to update to 19 or 20 in order to do it?