Given the risks, you should approach the download with caution. Here is a ranked list of sources from safest to least safe:

If you are reading this article in 2025 or later, consider upgrading. There are now excellent alternatives that work with most Chinese controllers:

If you still have the seller’s contact information (e.g., via AliExpress message history), ask for a fresh download link. Many vendors maintain Google Drive or Dropbox links.