- Joined
- Mar 22, 2020
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- 7
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- Age
- 83
I recently had a controller fail, no WIFI. I purchased a replacement controller that has original factory firmware, the drone is upgraded to Open Solo 4. Must I return the drone to factory firmware and upgrade both to Open Solo 4, or is there a procedure to upgrade the controller by itself. I have 3 other flying 3DR Solos that I have upgraded to Open Solo 4.