Godox X1T-S Firmware V16 for Sony was released with a few updates included:
1. To make a compensation to the TTL output value at large aperture setting.
2. To add Fn-10 in custom function settings. When setting as 01, the AF-assist function can be used on Interchangeable Lens Digital Camera (some cameras e.g. A9, A7, etc.).
3. To solve the problem that the ISO will change to 819200 from 100 when A7RM2 camera is using the high-speed continuous shooting in M mode.
4. To add Fn-11 in custom function settings, so that the customer can set RFID.
X1R-S
You can download them here
Godox X1T-S: B&H Photo / Amazon / Adorama
Godox X1R-S: B&H Photo / Amazon
Godox V860IIS: B&H Photo / Amazon
Godox TT685S: B&H Photo / Amazon
Godox TT350S: B&H Photo / Amazon