Atomos is updating their recorders to fully support the Fujifilm X-T2 for HDR Log exposure. You can download the Ninja Flame 7.12 update here and the Shogun Flame 7.12 update here.
If your interested in purchasing an Atomos they are available from your favorite retailers.
Ninja Flame B&H Photo/Amazon/Adorama
Shogun Flame B&H Photo/Amazon/Adorama