can you explain the options...But, there are many other Options to chnage and Create Tools/Software for the watch...
i had wrote Huami and asked them for the Kernel Codeing and Rom`s "if" there at the Developer`s are some to download for me but they said they didn`t have some kind of them or if they had they didn?t want to give it consumers and also for security reason`s. On Samsung GGalaxy Watche`s you have to copy and paste some weird CSC Files to special Rom`s from Asia and what know I from who. Maybe with some Ugly Spyware on. I Personal use a Amazfit Stratos 2, Nexo, Verge, Samsung Galaxy Gear S3 Frontier, Moto 360 Gen. 1 (But only in the Stand for Table Watch) I have Custom Rom`s installed on the Amazfit Watches Stratos 2 and the Verge with also Amazmod installed and init.d support extra flash, busybox and also zipalign. There`s also a AmazBoost Toll here to find. That`s also a good solution i mean for me personally. So, if you want to Flash a C Rom, you have to Download Some Toll Like "TOOL IN ONE" "WITH" a "BL-UNLOCKING" Function. And there are a one, but i didn`t recognize it yet. I didn`t use it also or had used. There are some twitter Linkings in the Past there was a BL Unlocking Tool, but they is been closed for a longer period of time. But you should have to ask here or google. There is something you will find.