The refers to a ported version of OnePlus's OxygenOS firmware modified to run on the Xiaomi POCO X3 NFC (codename: surya ). OxygenOS is not officially supported by Xiaomi, so these files are community-made "ports" available on developer forums like XDA Forums . Port Information & Latest Versions

Flashing this ZIP file requires several high-risk modifications to your device:

Because these are unofficial ports, there is no single "official" download. Development is handled by different independent maintainers:

Downloads are typically hosted on SourceForge or shared via community Telegram groups . Key Features for POCO X3 NFC