I accidentally got an HRM-RUN GEN 1 with FW 6.3

Which doesn't have some datas of Running Dynamic like Vert. Ratio, Stride length, and GCT BALANCE. I used to have fenix 3 for years so I knew that the problem would be solved by update FW to 6.6 but I don't know how to update the HRM RUN via my Fenix 6X.

Please give me a piece of advice.