While that downloads
1. Check you have the right version of GTA V
Redux only works with GTA V Legacy, build 1.0.3889.0 (Steam or Rockstar Warehouse). It does not work with Rockstar’s 2025 Enhanced Edition re-release, because OpenIV does not support Enhanced. If you are on Enhanced, this file will not install and the download is wasted.
2. Make room on disk
You need roughly 70 GB free while installing, not 3.23 GB. OpenIV builds a
separate modded copy of GTA V’s large archive files in the mods folder, so the
download size is nowhere near the final space used.
3. Get OpenIV ready
Install OpenIV and its ASI Loader, and disable BattlEye for Story Mode. Both steps are covered in the full installation guide, which is worth reading now rather than after the download lands.
4. Verify the file when it finishes
Compare the checksum linked above against the downloaded package:
certutil -hashfile GTA5_REDUX_v1.19.oiv SHA256
If you used the torrent instead, your client already verified every piece
against the .torrent, so no separate check is needed.
Before you go online
Mods are only safe in Story Mode. Never load Redux, or any mod, in GTA Online. Remove or disable the mod-loader files and re-enable BattlEye before going online, or you risk a ban.