---
title: kFWIsochBigEndianUpdates
framework: IOKit
role: symbol
role_heading: Enumeration Case
platforms: [Mac Catalyst 13.0+, macOS 10.4+]
path: iokit/iofwisochportoptions/kfwisochbigendianupdates
---

# kFWIsochBigEndianUpdates

## Declaration

```occ
kFWIsochBigEndianUpdates = BIT(3)
```