With this firmware accessory option is added and Shoe Mount Flash can be upgraded with the camera. Means it allows the flash update via X-T1, X-T2 and X-Pro2.
Fuji recommends that applicable product owners upgrade their EF-X500 flash firmware to version 1.02. The serial numbers of the flashes which requires this firmware upgrade can be checked in the searching form below. If the serial number is not applicable, the firmware of your EF-X500 flash unit does NOT need upgrading.
Fujifilm Released New Firmware for X-Pro2, X-T2, X-T1 and EF-X500
The EF-X500 firmware update Ver. 1.02 from Ver.1.00 incorporates the following issues:
We identified the phenomena below, which could arise in rare instances when certain EF-X500 units are in stand-by mode and when a communication error occurs between the camera and this flashphenomena below could occur in the aforementioned instances:
1. The applicable EF-X500 flash unit does not properly respond to turn on from stand-by mode.
2. The alkaline batteries may become increasingly hot. If you try to take the batteries out of the EF-X500 flash unit without turning the flash off and/or disconnecting the flash unit from the camera and letting the batteries cool down, a skin burn could occur.A firmware update is now available to address and prevent this potential occurrence in relevant EF-X500 units.The serial numbers of the flashes which requires this firmware update can be checked in the searching form from the link below .
<How to upgrade the firmware>
For EF-X500 owners who have X-T1, X-T2 or X-Pro2.
Update the firmware for X-T1,X-T2 or X-Pro2 first, then upgrade the firmware for EF-X500.