I bought a sealed device, with the intention of doing development but have not yet done anything like that
I installed GadgetBridge on my Android phone, paired it with the watch, uploaded the latest PineTime firmware, all without looking at code or opening it up or anything
It works perfectly fine as a basic watch with step counter and heart-rate monitor (although, I am not sure how accurate these features are)
If you can browse the web, download files, and find that file again when using a different app, then I think you’ll be fine