I can not connect Rockblock 2v.c with openmv h7

I can not download firmware for openmv h7. Now ı have firmware 4.3.1(lastest) version and ı try to use uart connection my all wired is true ım sure about that but openmv is not connect with rockblock v2.c over uart do you have any idea

I wouldn’t know why something you’re trying to connect is not working. Try checking TX/RX maybe they’re swapped, and make sure the boards have a common ground (GND->GND).

tahnks for reply i did it