Fujifilm has acknowledged a bug with the latest X-Pro2 firmware update that causes the camera to lock up in some instances.
The bug applies to Firmware Update Version 4.00 for the X-Pro2, which was launched on 22 December 2017. After its release some users reported that the camera stops working in certain settings.
Fujifilm says it is aware of the issue and is working on a fix as quickly as possible.
In a post on the company’s website, Fujifilm says:
Notice for customers
We have confirmed that X-Pro2 with the upgraded firmware (ver.4.00) released on Dec 22 2017 stops working in certain settings.
We deeply apologize for your inconvenience this may cause. The symptom will happen only when all three conditions below are set at the same time.
1) IMAGE QUALITY: FINE+RAW or NORMAL + RAW
2) RAW RECORDING: LOSSLESS COMPRESSED
3) DRIVE: any of ADVANCED FILTER
* This is not factory setting. If the symptom happens, please remove the battery once for recovery. We are preparing a revised firmware as a solution and plan to release it as soon as possible.
Via Fuji Rumors