How do I rollback to 1.13c?

So I've been trying to install PlugY to get all the ladder and b.net runewords and other advantages for SP, but I've got the game in 1.13d and can't manage to find anywhere a working link with a rollback patch.

Maybe it's me that I'm doing it wrong, but all the time I try to rollback it asks me to insert the D2 disk in the tray, which is impossible because I've only got the digital version. Cara download games untuk laptop.

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So yeah, if you've got a link for the rollback to 1.13c and maybe could give me some insight on how to do it, id appreciate it a lot!

Pd. I'm on W8, just in case.