Yongnuo 50F1.8S DA
firmware v09
Yongnuo · Released Jan 31, 2026 · First seen Jul 11, 2026
v09 is not the latest firmware for the Yongnuo 50F1.8S DA: the current version is v12 (September 30, 2026). Go to v12
In short — summary by updatemystuff.com
Improves focus performance with additional optimizations.
- Focus performance optimization
- Other optimizations
Written from Yongnuo's release notes, which are printed in full below.
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What's in this update
V09_2026/1/27
- ÓÅ»¯¶Ô½¹Îȶ¨ÐÔ Optimize focus performance
- ÆäËûÓÅ»¯ Other optimizations
V08_2025/12/10
- ÐÞ¸´A7M5¼æÈÝÐÔÎÊÌâ Fix the compatibility issue of the A7M5 camera
- ÓÅ»¯¶Ô½¹Îȶ¨ÐÔ Optimize focus performance
- ÆäËûÓÅ»¯ Other optimizations
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