I saw some similar posts with no replies but maybe someone can help me. I attempted to update from Open Solo 3 to 4 using Solex but it didn't work. The controller updated fine, the Solo did not. On solex it said it was on the postinstall script forever and I left it that way until the battery died an hour later. Repaired Solo to controller, and on reboot it showed a controller version mismatch (controller was at version 4, Solo wasn't). Attempted the update again on the solo and it said it was successful. Power cycled the drone and its stuck on all 4 green lights and won't pair to controller. Stuck here--can anyone tell me what I should try next?