Amazfit Watch faces

It seems that BIP .bin watchfaces work partially in BIP S. They don't show activity numbers.
Any idea about the .bin structure changes and how to pack/unpack BIP S .bin files?
Thanks

It's a good question.
I can't see also any tool to pack/unpack bin file for BIP S.
Some people post watchfaces for BIP S: How do they do?

Hi, here u can find an alpha version of the tool: myamazfit . ru/threads/bip-s-kompiljator-ciferblatov.1362/
Currently not all functions are compatible, for example the graphical progress things. (And the steps and the pulse are missing in the GIF preview, but it works on the Bip S.)