Logo/Signature Source Files editing

[Doyne5D23]

About 18 months ago I purchased a Signature/Logo for my Astrophotography from an online service and I do like it a lot, I also got the source files with the ourchase and would like to change just a couple things in the layout, what Adobe app would best help accomplish this? Thank you.

[Ton Frederiks · Accepted solution]

If it is an image: Photoshop. If it is vector: Illustrator.

[kglad]

<moved from download&install>