Download and support
8514FFSTM-E_APPv38 Firmware Update（Optimized Tuchong information and fixed some known bugs）
35mm F2.0 -L STM SE _VER1.9Resolved lens recognition issues when installing on powered-off cameras.
3314CFSTM-E_APP_ver06 Firmware Update (Optimized image information and focus ring rotation)
3314 CFSTM-Z_VER1.11 Firmware Upgrade-Optimized image information, manual focusing
5514 CFSTM-Z_VER1.14 Firmware Upgrade-Optimized image information, manual focusing
5514CFSTM-E_APPv15.uda Firmware Update (Optimized image information and focus ring rotation)
5514 CFSTM-X_VER1.18 Firmware Update (Optimized image information and focus ring rotation direction)
3314 CFSTM-X_VER1.18 Firmware Update (Optimized image information and focus ring rotation direction)
8518FFSTM-L II VER2.7 linear and nonlinear focus (Download the zip file and unzip it to use)
33mm F1.4 CFSTM-X_V1.17 （Optimize the values of some aperture stops）