The update is rolling out for both unlocked and carrier-locked units of the Samsung Galaxy Z Flip 5G. The firmware for the former comes with version F707U1UEU2EUL9 and F707USQS2EUL9 for the latter.
Samsung Galaxy Z Flip 4G
Both builds come with the usual Android 12 and One UI 4 goodies and the December 2021 Android security patch, which is a bummer since Samsung started rolling out the February 2022 patch for its smartphones last month.
That said, if you live in the US and haven’t received the update on your Galaxy Z Flip 5G yet, you can try checking it manually by heading to its Settings > Software update menu.