What do you mean “downloading” bolt.diy?
Install Node and Git, and then…
Browse to a directory and:
git clone https://github.com/stackblitz-labs/bolt.diy.git
cd bolt.diy
npm install pnpm
pnpm install
pnpm run dev
Or follow my tutorial on Deploying Bolt.diy with Cloudflare Pages (the easy way!) where it doesn’t require any setup on your machine at all. It runs completely on Cloudflare Pages (free), from your own GitHub fork of Bolt.diy (free), and you can grab LLM API’s from HuggingFace (also free).