Before starting, ensure you have a Windows PC and the original OnePlus Dash cable, as third-party cables often fail to establish a stable EDL connection.
When to seek professional help
Ensure you download the version matching your region/ROM (OxygenOS or HydrogenOS). The international OxygenOS version is the safest for most users. oneplus 3t unbrick tool
: This often occurs due to a faulty USB port or cable. Try switching to a different USB port (preferably USB 2.0) or a different cable. Before starting, ensure you have a Windows PC