NEW COSMO C1 RELEASE | STABLE, YOU GET IT Hollyland Tech November 15, 2021 03:33 Updated Related articles How to upgrade the firmware of Cosmo C1 to V1.0.3.5? User Manual Brochure How to upgrade Solidcom M1 to the latest firmware V1.1.3.6? Why there is no video display on monitor? Comments 0 comments Please sign in to leave a comment.